Best Fibers for Knitting & Crocheting

Originally published on February 29, 2024

Make yourself comfortable with a cup of tea or coffee - and maybe a few snacks - because this post is going to be a cozy deep dive. Today, I want to take you on a journey through the wonderful world of yarn and its many variations. So grab your favorite beverage, settle in, and let’s explore the glamorous universe of fiber together.

Yarn is the heart and soul of every knitting and crocheting project. This versatile material transforms simple strands into stunning creations, offering endless possibilities with its variety of fibers, weights, and colors. Each type of yarn brings its own unique charm and functionality, making it the foundation of every creative journey in fiber arts.

I was in heaven when I walked into this yarn store, filled with my favorite yarn brand!

Table of Contents

• Plant Fiber Yarns

  • Bamboo

  • Cotton

  • Hemp

  • Linen

  • Soybean

• Animal Fiber Yarns

  • Cashmere

  • Mohair

  • Alpaca

  • Merino Wool

  • Llama

• Synthetic Yarns

  • Acrylic

  • Polyester

  • Nylon

  • Modacrylic

  • Tencel

• Yarn Fiber Blends

  • Cotton Blends

  • Wool Blends

  • Synthetic Blends

• Specialty Yarns and Constructions

  • Metallic, Chenille, Tinsel & Novelty Yarns

  • Textured and Bouclé Yarns

  • Blow Yarn (Drops Wish, Drops Air, Concept by Katia)

• Caring for Your Yarn Creations

• Understanding Yarn Weights

• Conclusion

Plant Fiber Yarn

Plant-based yarns are a popular choice for knitting and crocheting, especially for eco-conscious crafters. Made from natural fibers like cotton, bamboo, and hemp, these yarn types are biodegradable and offer excellent breathability, moisture-wicking properties, and elasticity. Whether you're knitting lightweight summer garments or crocheting durable accessories, plant-based yarns are a versatile option

Here are some of the most common plant fiber yarns:

• Bamboo: Bamboo yarn, derived from one of the fastest-growing plants on Earth, is celebrated for its durability, silky softness, and excellent absorbency. Naturally resistant to wrinkles and odors, it’s a versatile choice for everything from lightweight garments to cozy accessories.
• Cotton: Cotton is a widely used plant fiber yarn that is known for its softness, absorbency, and naturally wrinkle-resistant properties. As it is machine-washable and affordable, it is a popular choice for everyday wear, dish clothes or baby soft toys.
• Hemp: Hemp is a strong, durable, and naturally UV-resistant plant fiber yarn. Its odor-resistant and fire-retardant features make it great for outdoor projects and garments.
• Linen: Linen is a natural fiber yarn that is known for its strength, breathability, and wrinkle-free drape. Since it is naturally moisture-wicking and cool to wear, it’s perfect for summer garments.
• Soybean: Soybean is a newer plant fiber yarn that is gaining popularity due to its soft, luxurious feel and drape. It is also naturally hypoallergenic and biodegradable, making it a sustainable choice for knitting and crocheting projects.
  
  

100% Cotton

Animal fiber yarns

Animal-based yarns bring a touch of luxury and warmth to your projects. Known for their ability to regulate body temperature, these fibers are a go-to choice for winter wear, offering both comfort and elegance.

Temperature Regulation

One of the things I love most about animal fibers is how they naturally help regulate your body temperature. In the summer, these fibers wick moisture away from your skin - like sweat - and release it into the air, keeping you cool and comfortable. And in the winter? They trap heat close to your body, acting as an insulating layer that keeps you warm even when it’s freezing outside. It’s almost like they know what you need, no matter the season!

Breathability

Another big win for animal fibers is how breathable they are. Unlike synthetic materials, which can feel suffocating or sticky, animal fibers let air circulate freely. This means you won’t overheat when it’s warm out, but you’ll still stay cozy when the temperature drops. It’s one of those “best of both worlds” perks that makes working with these fibers such a joy.

Lightweight Warmth

And let’s not forget how lightweight they are! Take merino wool, for example - it’s so soft and non-bulky, making it perfect for summer garments. But here’s the magic: it still keeps you warm when the weather turns chilly. You get all the comfort without the bulk, which is especially great if you’re making something like a shawl or a lightweight sweater that needs to work year-round.

Here are some of the most common animal fiber yarns:

• Cashmere: Cashmere is a luxurious and warm yarn derived from the undercoat of cashmere goats. It is known for its soft, delicate feel and ability to retain warmth without feeling bulky.
• Mohair: Mohair is a silky and lustrous yarn derived from the Angora goat. It is known for its lightweight, drape, and warmth. But not everyone likes mohair. Personally, I only use KFO or Seaturi from Lana Grossa, everything else feels too itchy for me.
• Alpaca: Alpaca is a soft, fine, and luxurious yarn derived from the alpaca, a domesticated member of the camel family. It is known for its warmth, breathability, and resistance to shrinking and pilling. Alpaca is a good choice for delicate garments and accessories. 
• Merino Wool: Merino wool is one of my go-to yarns for almost any project. Sourced from the Merino sheep, it’s incredibly soft and lightweight, making it perfect for cozy sweaters or even baby clothes. I especially love how it resists odors and pilling, because who wants to deal with fuzz balls on their favorite scarf?
• Llama: Llama fiber is a warm, durable, and naturally water-resistant yarn derived from the llama, a domesticated South American camelid. It is known for its strength, drape, and ability to repel water, which makes it a good choice for outdoor garments and projects.

65% Wool, 35% Alpaca / 100% Wool / 100% Merino (from left)

Synthetic yarns

Introduced in the 20th century, synthetic yarns have transformed the crafting world. These man-made fibers boast impressive qualities like durability, low-maintenance care, vibrant color options, and even hypoallergenic properties, making them a practical and versatile choice for many projects.

Here are some of the most common synthetic fibers used for yarn:

• Acrylic: Acrylic is a synthetic fiber that is made from petroleum-based chemicals. It is soft, warm, and affordable, and thus a popular choice for beginners and experienced knitters alike. Acrylic is also available in a wide range of colors and weights.
• Polyester: Polyester is a synthetic fiber that is also made from petroleum-based chemicals. It is durable, wrinkle-resistant, and machine-washable, making it ideal for projects that require frequent washing, such as towels and outdoor garments. Polyester is also resistant to fading and shrinking.
• Nylon: Nylon is a synthetic fiber that is made from coal, air, and water. It is strong, elastic, and water-resistant, and its durability is why it is often used in sportswear and outerwear. Nylon is also resistant to pilling and shedding.
• Modacrylic: Modacrylic is a synthetic fiber that is made from wood pulp. It is very soft and has a natural feel, which makes it a popular choice for garments that require a soft touch. Modacrylic is also flame retardant, making it a good choice for children's clothing and home textiles.
• Tencel: Tencel is a synthetic fiber that is made from natural cellulose fibers. It is soft, absorbent, and has a natural drape, making it ideal for garments that require a comfortable and flowing fabric. Tencel is also biodegradable, making it a more environmentally friendly choice than some other synthetic fibers.

100% Acrylic

Yarn blends

Yarn fiber blends are a combination of two or more types of fibers, and they offer a wide range of benefits and properties that can make them a great choice for knitting, crocheting, and other crafting projects.

Here are some of the most common types of yarn fiber blends:

• Cotton blends: Cotton is a versatile that is soft, breathable, and absorbent. It is often blended with other fibers to create yarn that is even softer, more durable, or has better drape or shape. Some popular cotton blends include cotton/acrylic, cotton/bamboo, cotton/merino, and cotton/linen.
• Wool blends: Wool is a natural fiber that is warm, water-resistant, and has good resiliency.  Some popular wool blends include wool/acrylic, wool/merino, and wool/mohair. Sock wool is a very popular yarn, the 25% Polyamide not only strengthens the yarn, but it also helps that your finished project holds its shape after washing it. Most sock yarn is “super wash treated”, which means that you can wash the finished project in your washing machine without shrinking or felting it. 
• Synthetic blends: Synthetic fibers, such as acrylic, nylon, and polyester, are often blended with natural fibers to create yarn that is more affordable, durable, and easy to care for. Some popular synthetic blends include acrylic/wool, nylon/silk, and polyester/cotton.

51% Tencel, 49% Cotton	Sock wool — 85% Merino, 15% Nylon

Specialty yarns

Specialty yarns are a broad category of yarns that exhibit unique properties or characteristics that set them apart from traditional yarns. These yarns are typically used to create special effects or to achieve specific results in knitting or crochet projects.

Here are some of the most common types of specialty yarns:

• Metallic yarns: These yarns contain metallic fibers that sparkle and shimmer. They are frequently used to create festive projects or to add a touch of glamour to garments.
• Chenille yarns: Chenille yarns have a fuzzy, caterpillar-like texture. They are typically used to create plush and cuddly items, such as toys and blankets.
• Tinsel yarns: These yarns contain tiny strands of glitter or tinsel that add sparkle and shine to projects. They are frequently used to create festive decorations or to add a touch of whimsy to garments.
• Textured yarns: These yarns feature various textures, such as bouclé, and eyelash. They are often used to create intricate patterns or to add visual interest to projects.
• Novelty yarns: These yarns are made from unusual fibers, such as bamboo, soy, or even recycled materials. They are frequently used to create unique and eye-catching projects.

Faux Fur - 100% Polyester

Blow-Spun Yarn

So, what exactly is blow yarn? It’s a special type of yarn made by “blowing” short, soft fibers, like alpaca, wool, or cotton, into a fine mesh tube that’s usually made from something strong like nylon, cotton, or silk. Unlike regular yarns that are twisted or plied, blow yarns don’t have any twist at all; the fibers are simply held together inside the tube, giving the yarn its unique structure.​

Comparing Blow Yarns: Drops Wish, Drops Air, and Concept by Katia

If you’re curious about the differences between popular blow yarns, I’ve tested three: Drops Wish (discontinued, black), Drops Air (red), and Concept by Katia (light green).

Drops Wish: This is the chunkiest of the three, with a thick, airy structure. It feels extra plush in your hands and knits up super quickly, making it great for really cozy hats, scarves, or even chunky sweaters when you want maximum warmth without too much weight. The halo is very noticeable, and the yarn is soft, though its thickness means stitch definition is generally quite fuzzy and soft-focused. The white-ish core you see running through the center of the strand is the mesh tube. This fine tube is what the loose alpaca, wool, or cotton fibers are blown into, and it acts as a foundation that gives the yarn its structure and keeps everything together.	Drops Air,  is like Wish’s lighter, airier sibling. It has a lovely fluffy feel and knits up warm but with a softer drape. This one doesn’t feel as bulky in the hand, and I love how snuggly the finished piece is. The stitches? Soft and brushed, especially in darker shades, so don’t expect them to pop too much. Here you can see a darker, blackish mesh tube running through the middle of the yarn strand.	Concept by Katia, is the smoothest and finest of the bunch. It’s got just a hint of fluff, but if you want clean, crisp stitches that show off your fancy knitting, Katia is the clear winner. It’s silky, neat, and has a lighter halo.

Why knitters love blow yarn

Blow yarn feels incredibly light and fluffy in your hands. Because of the way it’s made, you end up with garments that are noticeably lighter than if you’d used the same thickness of traditional yarn, often 30 - 50% less weight. The mesh tube doesn’t just add strength, it also makes the yarn elastic and durable, so your finished piece holds its shape better and lasts longer.​

The best part? The hollow, airy structure traps warmth, so anything you knit is cozy without being heavy or bulky. Plus, blown yarn creates a soft, gentle halo, think cloud-like, that feels luxuriously soft when worn next to the skin.​

Good to know when working with blow yarn

It’s really user-friendly, even for lace and cables, because it resists splitting and holds up well against unraveling. And since you usually get more meterage per skein than with regular yarns, your project can go farther for less. Do keep in mind that the fluffiness can sometimes make it harder to keep your stitches even and, if you need to undo your work (“frogging”) - it’s not quite as smooth as with tightly twisted yarns.​

When is blow yarn the right choice?

Blow yarn is perfect for anything snuggly, soft, and warm, like sweaters, scarves, cowls, or layering pieces you’ll want right against your skin. Its signature haze isn’t for every style, so it’s worth knitting a swatch before you start, especially for textured patterns or cables.

This hat was knitted with Concept by Katia, and you can really see how clear and crisp the stitch definition is.	The Erika Slipover was knitted with Drops Wish. This garment is super warm and as light as a feather.	The Sophie Hood was knitted in Drops Air. It’s a very warm and lightweight piece that I’m sure will bring me a lot of joy.

Caring for Your Yarn Creations

Proper care is essential to ensure your knitted or crocheted masterpieces retain their vibrancy and integrity over time. One of the most important aspects is to follow the care instructions provided on the yarn label. For natural fibers, hand-washing is typically recommended, but some wool is labeled to be “super wash,” which means it’s machine washable!
While synthetic fibers may be machine-washable, it is often better to put the garment into a mesh laundry bag or even a pillowcase to give it a bit of protection and stop it snagging on other items in the wash.

Yarn weight

When I was a beginner, I often read about yarn weight. This was the one thing that confused me the most, because here in Austria, we don’t categorize the yarn weight.
When you also have trouble finding out the yarn weight of your yarn, Ravelry has listed almost all yarn brands with detailed explanations and yarn weights. 

Yarn weight refers to the thickness of the yarn, which plays a crucial role in determining the drape, gauge, and overall appearance of your finished project. Some patterns may not specify a particular yarn brand but instead recommend a specific weight to guide your choice.

Here are the standard yarn weights:

• Superfine: Superfine yarns are the thinnest and lightest yarns. They are typically used for delicate lacework and doilies.
• Fine: Fine yarns are slightly thicker than superfine yarns. They are often used for sweaters, scarves, and other garments.
• Sport: Sport yarns are moderately thick yarns. They are a good all-purpose yarn that can be used for various projects, including sweaters, scarves, hats, and mittens.
• DK: DK yarns are thicker than sport yarns, but not as thick as worsted yarns. They are a good choice for sweaters, socks, and other garments that require a bit more structure.
• Worsted: Worsted yarns are the most common yarn weight. They are a versatile yarn that can be used for a wide variety of projects, including sweaters, hats, blankets, and accessories.
• Bulky: Bulky yarns are one of  the thickest and heaviest yarns. They are frequently used for blankets, scarves, and other projects that require a lot of warmth and structure.
• Super Bulky: Super bulky yarns are even thicker than bulky yarns. They are often used for pillows, rugs, and other large projects.

70% Cotton, 30% Merino

You also can achieve a yarn weight by using two strands of the same yarn weight. 
I did some research on various sites on that topic and most of them came to the same conclusion. 

For example:

• two strands of lace weight = fingering
• two strands of fingering weight = DK
• two strands of sport  = DK or light worsted
• two strands of DK = Worsted/ Aran
• two strands of Worsted = Bulky

You can also use one fingering weight yarn held together with a lace weight yarn, or two fingering weight yarn with one lace weight. The possibilities are endless! 

100% Merino with Mohair Yarn

Yarn: The Heart of Every Fiber Art Project

Yarn is the foundation of every creative journey in knitting, crochet, and fiber arts. Whether you’re crafting cozy sweaters, a fine lace shawl, or playful amigurumi, yarn transforms simple strands into intricate patterns and cherished masterpieces. Choosing the right yarn can make all the difference in how your project feels, looks, and performs.

From soft merino wool to durable cotton blends, each type of yarn brings its own unique qualities to the table. And while personal preference plays a big role, understanding the strengths of different fibers - like breathability, elasticity, and warmth - can help you pick the perfect match for your next project.

Conclusion

At the end of the day, the yarn you choose is like the voice of your project - it tells a story and brings your vision to life. Whether you’re drawn to the natural warmth of wool, the lightweight comfort of cotton, or the luxurious drape of silk blends, there’s no wrong answer. It all comes down to what inspires you and what feels right in your hands.

Now it’s your turn! What’s your favorite yarn type for knitting or crocheting? Are you team wool, cotton, or something else entirely? Share your thoughts in the comments below - I’d love to hear about your go-to picks and any tips you swear by.

And if you enjoyed this post, don’t forget to join the Cozy Corner Newsletter for more insights, free patterns, and exclusive tips delivered straight to your inbox. Let’s keep creating together!

Until next time, happy knitting!

I used this yarn from Lana Grossa for the Vine Pullover. The yarn is a blend of 85% alpaca and 15% merino wool, and it’s a little finer than DK-weight yarn. But don’t let the fineness trick you - it’s incredibly warm! My son has never complained about being cold, even when we had some days with temperatures as low as -10 degrees Celsius this winter.

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