The picks
Best Yarn for Potholders and Trivets
This is the one project on this site where the fiber choice is a safety decision.
By Sawyer V. · Published September 9, 2026
Disclosure: we earn a commission when you buy through the links on this page, at no extra cost to you. It never decides what we recommend or how we rank it - read the full disclosure.
The short answer
Use 100% cotton, and use it doubled. Cotton chars under heat; acrylic and other synthetics soften and can stick to skin. Wool is safe for a flat trivet but poor in the hand because it insulates badly when damp. A single layer of any fiber is not enough - potholders need thickness.
| # | Product | Best for | Weight | Price |
|---|---|---|---|---|
| 1 | No photoLily Sugar'n CreamCotton chars rather than melts, which is the entire specification. | Potholders, trivets, oven mitts | Worsted (4) | Check price on Amazon#ad disclosure |
| 2 | No photoLion Brand 24/7 CottonMercerized cotton: smoother to work, stronger, and it keeps its color through hot washes. | Potholders you are giving away | Worsted (4) | Check price on Amazon#ad disclosure |
| 3 | No photoPatons Classic Wool WorstedWool is genuinely flame-resistant, and felted wool is the traditional trivet material. | A mat under a hot dish, not something you hold | Worsted (4) | Check price on Amazon#ad disclosure |
| 4 | No photoCaron Simply SoftAcrylic is a plastic. Against a hot pan it softens, and softened plastic sticks. | Blankets, well away from a stove | Worsted (4) | Check price on Amazon#ad disclosure |
Lily Sugar'n Cream
Lily · Best for potholders, trivets, oven mitts
Unmercerized cotton in a small 2.5oz ball. Absorbent, hard-wearing, and the reason every dishcloth pattern ever written specifies it.
- Fiber
- 100% cotton
- Weight
- 4 Medium / worsted
- Ball
- 2.5oz / 71g, 120yd / 109m
- Gauge
- 20 sts x 26 rows on 4.5mm (US 7)
- Hook
- 5mm (US H/8), 13 sc x 14 rows
- Care
- Machine wash not above 86F delicate, tumble dry low
Who it suits
Anyone making anything that will touch a hot pan.
Why it is here
100% USA-grown cotton, worsted weight, 120yd per 71g ball, machine wash. Cotton is a cellulose fiber: under heat it scorches and eventually burns, but it does not soften, flow or stick. That behavior is what makes it the only sensible potholder fiber.
What you give up
It is the loosest-spun cotton here, so it splits on the hook and sheds a little lint in its first washes. Neither matters much in a potholder.
Specifications from Yarnspirations product page. We have not handled this item - see how we pick.
Lion Brand 24/7 Cotton
Lion Brand · Best for potholders you are giving away
Mercerized cotton with a sheen and a stiff hand. Stitch definition is the best on this page, which is why amigurumi people keep buying it.
- Fiber
- 100% mercerized cotton
- Weight
- Worsted
- Skein
- 3.5oz / 100g, 186yd / 170m
- Gauge
- 19 sts x 26 rows on 5mm (US 8)
- Hook
- 5.5mm (US I/9), 16 sc x 18 rows
- Care
- Machine wash, water not above 105F; medium heat dryer
Who it suits
Anyone making a matched kitchen set as a gift.
Why it is here
100% mercerized cotton, worsted weight, 186yd per 100g. Mercerizing treats the fiber under tension, which makes it stronger and far more colorfast - a kitchen textile gets washed hot and often, and untreated cotton fades faster.
What you give up
Mercerizing reduces absorbency slightly, so it is marginally less good at handling a wet pan handle. It also costs more per yard.
Specifications from Lion Brand product page. We have not handled this item - see how we pick.
Patons Classic Wool Worsted
Patons · Best for a mat under a hot dish, not something you hold
100% non-superwash wool at supermarket money. It blooms when blocked, holds a cable, and it will felt if you put it in the machine.
- Fiber
- 100% wool (not superwash)
- Weight
- 4 Medium / worsted
- Ball
- 3.5oz / 100g, 194yd / 177m
- Gauge
- 20 sts x 26 rows on 4.5mm (US 7)
- Hook
- 5mm (US H/8), 14 sc x 17 rows
- Care
- Hand wash, lay flat to dry, do not machine wash
Who it suits
Anyone making a table trivet rather than something that goes near an oven.
Why it is here
100% untreated wool, worsted weight, 194yd per 100g. Wool is naturally difficult to ignite and self-extinguishing, and felting it produces a dense heat-resistant mat - see [best yarn for slippers](/yarn-by-project/best-yarn-for-slippers) for the felting method.
What you give up
Wool is a poor potholder because it is a poor thing to get wet, and a damp potholder conducts heat straight to your hand. Use it flat on a table, not in your grip.
Specifications from Yarnspirations product page. We have not handled this item - see how we pick.
Caron Simply Soft
Caron · Best for blankets, well away from a stove
A softer, shinier acrylic worsted with noticeable drape - which is exactly why it is a poor choice for anything that needs to hold a shape.
- Fiber
- 100% acrylic
- Weight
- 4 Medium / worsted
- Skein
- 6oz / 170g, 315yd / 288m
- Gauge
- 18 sts x 24 rows on 5mm (US 8)
- Hook
- 5mm (US H/8), 13 sc x 14 rows
- Care
- Machine wash cool, dry flat, no bleach
Who it suits
Nobody, for this project. It is a good blanket yarn and a genuine hazard in a potholder.
Why it is here
100% acrylic, worsted weight, 315yd per 170g. It is soft, cheap and comes in every color, which is why it ends up in kitchen projects.
What you give up
Acrylic melts rather than chars. A melted synthetic can adhere to skin, which turns a burn into a worse burn, and it will glaze permanently against a hot pan even when nobody is hurt. There is no version of this that is worth the saving.
Specifications from Yarnspirations product page. We have not handled this item - see how we pick.
Why this page is blunter than the others
Almost every fiber choice on this site is a trade between comfort, cost and durability, and the wrong choice produces a disappointing object. This one is different.
Synthetic fibers - acrylic, polyester, nylon - are thermoplastics. Heat them enough and they soften, then flow. A softened synthetic pressed against skin does not brush off, and that is what turns a routine contact burn into an injury. Cellulose fibers like cotton do not do this: they scorch, then char, then burn, and at no point do they become sticky.
The same logic applies to the yarn you use for the hanging loop and for sewing the layers together. A cotton potholder assembled with acrylic yarn is an acrylic potholder at the seams.
Thickness matters as much as fiber
Cotton conducts heat. A single layer of worsted cotton will not stop a hot pan handle, and people discover this at the worst moment.
- Double the fabric. Fold a long rectangle, or make two squares and seam them.
- Or hold the yarn double and work at a firm gauge. Two strands of worsted on a 4mm hook makes a dense fabric.
- Or use a thick textured stitch. Double-thick brioche, waffle stitch and the traditional double-knit potholder all trap air, and trapped air is the insulation.
- Or add a layer. A square of cotton batting or an old towel between two knitted panels is what commercial potholders do.
- Test it before you trust it. Hold a hot mug through it. If you can feel the heat inside three seconds, add a layer.
Cotton, linen and hemp all work
| Fiber | Under heat | Verdict |
|---|---|---|
| Cotton | Scorches, then chars | The standard answer |
| Linen | Scorches; more heat-tolerant than cotton | Excellent, and less common |
| Hemp | Similar to linen | Good, harder to source |
| Wool | Difficult to ignite, self-extinguishing | Safe flat; poor in the hand when damp |
| Acrylic | Softens, melts, can adhere to skin | Never |
| Polyester and chenille | Same as acrylic | Never |
| Nylon-blend sock yarn | Melts | Never |
Linen deserves more attention than it gets here - it is more heat-tolerant than cotton and it gets softer with every wash, which for a kitchen textile washed constantly is a real advantage. Our linen vs cotton page covers the trade.
The wet potholder problem
Worth knowing, because it catches people who have done everything else right.
Water conducts heat far better than air does. A damp potholder transmits heat to your hand almost immediately, whatever it is made of - which is why the traditional advice is never to pick up a hot pan with a wet cloth. Keep a dry one to hand, and do not use the dishcloth as a potholder even though it is the same yarn.
Yardage and sizes
- Standard 8in square potholder, doubled: 90-140yd of worsted cotton.
- Small 6in square: 60-90yd.
- Round trivet, 9in: 100-150yd.
- Oven mitt, doubled and lined: 180-250yd.
One 120-yard ball makes roughly one doubled potholder, which makes this a good use for a single ball and a genuinely useful gift set at four balls.
What we would buy
- The standard: Lily Sugar'n Cream, doubled.
- A gift set: Lion Brand 24/7 Cotton for the colorfastness.
- A felted table trivet: Patons Classic Wool, felted after knitting.
- Never: acrylic or any synthetic, including for the hanging loop.
Questions people actually ask
What yarn is safe for potholders?
100% cotton, or linen. Both are cellulose fibers that scorch and char under heat. Acrylic, polyester and nylon are thermoplastics - they soften and can adhere to skin, which makes a burn worse.
Can you use acrylic yarn for potholders?
No. Acrylic melts rather than chars, and melted synthetic can stick to skin. It will also glaze permanently against a hot pan. Use cotton, including for the hanging loop and the seaming yarn.
How thick does a potholder need to be?
At least double. Fold one long piece, seam two squares, hold the yarn double, or use a thick textured stitch. Test it by holding a hot mug through it - if you feel heat within three seconds, add a layer.
Is wool safe for potholders?
Wool is genuinely flame-resistant and excellent as a flat trivet, especially felted. It is a poor potholder to hold, because it insulates badly once damp and a damp potholder conducts heat straight to your hand.
How much yarn does a potholder take?
90 to 140 yards of worsted cotton for a doubled 8in square - roughly one ball. A set of four is a good use for four balls and makes a genuinely useful gift.