Uploaded November 2023 | Updated September 2026, 3 hours ago

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new.knitfreedom.com/blog/reinforce-socks for all the links and tutorials

Prevent, detain, deter! Stop socks from wearing out with the the top 9 tricks and techniques to reinforce your sock heels, soles, and toes.

#1 - Knit with a needle 2-3 sizes smaller than what you would normally use

Clara Parkes emphasizes this as one of the best techniques in her book The Knitters Book of Socks. There's a test you can do to see if the fabric is tight enough: Modern Daily Knitting's post on how to reinforce socks says, "Stretch the fabric a little, and rub the purl side of the fabric. It should feel solid, and you shouldn’t be able to feel the individual stitch bumps or the gaps between them."

#2 - Do Heel Stitch all along the sole

This works great for those who wear out the bottoms of the heels and the balls of the feet. Here is KnitFreedom's tutorial on Heel Stitch (the Slip-Stitch Heel). To work this on our toe-up Fleegle Heel sock while increasing for the heel gusset, keep the slip stitches lined up in the same columns.

This great idea comes from Winwick Mum's post on reinforcing sock heels.

#3 - Do Eye-of-the-Partridge stitch all along the sole

Same as the idea above, but with Eye-of-the Partridge stitch. To work this on a Fleegle Heel sock, make sure the slip stitches and knit stitches are alternating as you increase. Here is KnitFreedom's tutorial on the Eye-of-the-Partridge Stitch.

#4 - Use reinforcing thread

Hold a reinforcing thread like Regia Darning Thread along with your yarn. On a Fleegle Heel sock you'd need to carry the thread all the way around the foot as you do the heel gusset. There's no easy way to just carry the thread on the sole of the sock.

Modern Daily Knitting's post on reinforcing socks, among other sources, warns that you should not use Wooly Nylon or regular sewing thread as reinforcing thread, as it could actually cut your sock yarn.

#5 - Use a fuzzy reinforcing thread like Kidsilk Haze

Why not use a warm and strong laceweight yarn like Kidsilk Haze (contains mohair) as your reinforcing thread? If you don't want an extra warm and fuzzy sock you could use any silk laceweight yarn.

On a Fleegle Heel sock you'd need to carry the thread all the way around the foot as you do the heel gusset. There's no easy way to just carry the thread on the sole of the sock.

This great idea comes from Modern Daily Knitting's post on reinforcing socks.

#6 - Work a top-down sock with a square heel

The square heel puts the heel turn, ahem, squarely under the heel where most people wear out their socks. Work heel stitch or Eye-of-the-Partridge stitch on the heel turn and, voila! You've got an extra-sturdy heel right where it matters.

This great idea comes from Modern Daily Knitting's post on reinforcing socks.

#7 - Weave yarn in and out of the purl bumps on the wrong side

This technique is tedious but it works. Plus, you can reinforce only the areas which tend to wear out the fastest like under the ball of the foot and under the heel. Excellent sources that go into detail on this simple technique are Osborn Fiber's post on reinforcing heels and Knitty's post on reinforcing and darning heels.

I've done this technique and actually wrote a blog post on it, but I can't find it for the life of me! 🤦‍♀️😜 But it's very simple and you can refer to the posts referenced above to learn how it works.

#8 - Pre-darn problem areas using Duplicate Stitch

This could look really lovely if done in a contrasting yarn. Consider using Duplicate Stitch to make a heart shape on the bottom of the heel and the ball of the foot, how cute would that be? You can also do this as the sock starts to wear out a little and you see where the problem areas are.

See KnitFreedom's video tutorial on Duplicate Stitch (part of our Charts Demystified video class)

This great idea is mentioned in Modern Daily Knitting's post on reinforcing socks and Knitty's post on reinforcing and darning heels.

#9 - Use Phentex slipper yarn

KnitFreedom Superstar student Deb shared that she uses the indestructible Phentex yarn to make her husband socks that have lasted for decades. Give it a shot! Buy Phentex yarn here (and elsewhere online).

#10 - Darn any holes

If you already have socks with holes, you can invisibly darn them and make them good as new. Here is KnitFreedom's in-depth video tutorial on How to Darn Socks and Repair Holes in Knitting.

Please leave me a comment and let me know how interesting this was for you, on a scale of 1-10. What was the most interesting thing about this for you? Thank you!

Would you like to see KnitFreedom videos going more in-depth on any of these techniques? Let me know in the comments!