Comfy Socks Crochet Pattern Using Back Loop Slip Stitches

There is something deeply satisfying about pulling on a pair of handmade socks. They fit differently than anything you can buy at a store, and when you make them yourself, you get to choose every detail — the yarn, the colors, the length, the cuff style. Among all the stitch patterns available to crochet sock makers, the back loop slip stitch stands out as a particular favorite. It creates a fabric that is dense without being stiff, stretchy without being sloppy, and beautifully textured in a way that mimics the look of knitting. If you have been searching for a comfortable, beginner-friendly crochet sock pattern that uses back loop slip stitches, you have come to exactly the right place.

This guide will walk you through everything you need to know — materials, sizing, gauge, construction method, and the full step-by-step pattern — so you can sit down with your hook and yarn and come away with a pair of socks you will reach for every single day.

Why Back Loop Slip Stitches Make the Best Crochet Socks

Before we dive into the pattern itself, it is worth understanding why the back loop slip stitch is such a game-changer for crochet socks. Most crocheters are taught early on that slip stitches are just for joining rounds or finishing seams. They are the stitch you rush past on your way to the “real” work. But when you work slip stitches in rows or rounds through only the back loop, something remarkable happens.

The fabric becomes tight and compact — ideal for a sock that needs to hold its shape inside a shoe. Because you are only inserting your hook through the back loop, a subtle ridge appears on the surface of the fabric, creating a horizontal ribbed texture that both looks polished and functions well. The sock flexes naturally with your foot. It does not bunch, and it does not sag. Unlike taller crochet stitches, slip stitches leave very little space between loops, which means the final fabric has almost no holes and keeps your foot genuinely warm.

There is also a practical bonus for new sock-makers. Because you are working with one of the simplest movements in crochet — just pulling a loop through a loop — the back loop slip stitch is incredibly forgiving. You do not need to manage yarn-overs or count post stitches. Once you find your rhythm, these socks practically make themselves.

Materials You Will Need

Getting your materials right before you start will save you frustration later. Here is what you need to gather before casting on.

Yarn: Choose a fingering weight or sock weight yarn, ideally one with a small percentage of nylon blended in — something in the range of 75% superwash merino wool and 25% nylon is an excellent choice. The nylon adds durability in the heel and toe areas, which take the most wear. You will need approximately 350 to 400 yards for a women’s medium sock (shoe size 7 to 9), and closer to 450 yards for a men’s medium (shoe size 9 to 11).

Hook: Use a 2.25 mm or 2.5 mm steel crochet hook. The back loop slip stitch works up tightly, so you may need to go up or down half a size to hit gauge. Some crocheters find they need a 2.75 mm hook if their tension runs tight. Do not skip the gauge swatch.

Additional supplies: A yarn needle for weaving in ends, stitch markers (at least four), scissors, and a ruler or measuring tape. A sock blocker is optional but makes a beautiful difference in the finished product.

Understanding Gauge

Gauge matters more in socks than almost any other crochet project. A sock that is even a centimeter too wide will slide around in your shoe and cause blisters. A sock that is too narrow will cut off circulation. Take the time to make a gauge swatch before you begin.

Work a small flat rectangle in back loop slip stitch rows, about 20 stitches wide and 20 rows tall, then measure it after blocking.

The target gauge for this pattern is 28 stitches and 32 rows over a 4-inch by 4-inch square (10 cm by 10 cm). If your swatch is larger than 4 inches wide, try a smaller hook. If it is smaller, go up a hook size. Adjust until your gauge matches before moving forward.

Sizing

This pattern is written for three sizes. Choose your size based on the finished sock circumference, which should be about 10 percent smaller than your actual foot circumference to allow for stretch.

Size Small fits a foot circumference of 7 to 7.5 inches (shoe size 5 to 6.5 for women). Size Medium fits a foot circumference of 8 to 8.5 inches (shoe size 7 to 9 for women, 7 to 8 for men). Size Large fits a foot circumference of 9 to 9.5 inches (shoe size 9.5 to 11 for women, 8.5 to 11 for men).

Throughout the pattern, stitch counts appear in the format Small (Medium, Large). If only one number appears, it applies to all sizes.

Abbreviations and Special Stitches

ch — chain

sl st — slip stitch

BLsl st — back loop slip stitch (insert hook under back loop only, pull up a loop, pull through loop on hook)

st(s) — stitch(es)

PM — place marker

SM — slip marker

rnd — round

RS — right side

WS — wrong side

dec — decrease (insert hook through back loop of next two stitches simultaneously, pull up a loop, pull through loop on hook)

Construction Overview

This pattern works from the cuff down. You will begin with a stretchy ribbed cuff, then work down the leg in back loop slip stitch rounds. At the heel, you will work a short-row heel (also called a heel flap variation) entirely in back loop slip stitches for consistency. Then you pick up stitches and continue in the round down the foot. The toe is worked with decrease rounds and finished with a Kitchener-stitch-inspired seam or a gathered closure.

The Full Pattern

Cuff

Make a slip knot and chain 56 (64, 72). Join with a slip stitch to form a ring, being careful not to twist.

Round 1: Ch 1, work 1 BLsl st in each chain around. Join with a slip stitch to the first stitch. Place a marker at the beginning of the round. — 56 (64, 72) sts.

Work BLsl st in the round, joining each round with a slip stitch, for a total of 12 rounds. This creates a clean, slightly stretchy cuff. If you prefer a longer cuff, simply work additional rounds here before moving on.

Leg

Continue working BLsl st in the round, joining each round, until the leg measures 6 inches (or your desired length) from the cast-on edge. For a crew sock, 6 inches of leg is standard. For an ankle sock, work just 2 to 3 inches. For a knee-high sock, continue until the leg measures 10 to 12 inches, increasing 2 stitches every 8 rounds to accommodate the calf shaping.

At the end of your final leg round, do not join. You will now work the heel back and forth in rows.

Heel Flap

The heel is worked over half the total stitches — 28 (32, 36) stitches. Leave the remaining stitches on hold for the instep. You can let them rest on the hook or on a stitch holder.

Row 1 (RS): BLsl st across 28 (32, 36) sts. Turn.

Row 2 (WS): Ch 1, BLsl st across. Turn.

Repeat Rows 1 and 2 until the heel flap measures 2.25 (2.5, 2.75) inches, ending on a WS row. The flap should be approximately square — about as long as it is wide.

Heel Turn

The heel turn shapes the bottom of your heel cup. You will be working short rows, leaving stitches unworked at the end of each row.

Row 1 (RS): BLsl st across 16 (18, 20) sts. Leave remaining sts unworked. Turn.

Row 2 (WS): Ch 1, BLsl st across 5 (5, 5) sts. Leave remaining sts unworked. Turn.

Row 3: Ch 1, BLsl st across to 1 st before the gap, work a dec over the last worked st and the first unworked st. Turn.

Row 4: Ch 1, BLsl st across to 1 st before the gap, work a dec over the last worked st and the first unworked st. Turn.

Repeat Rows 3 and 4 until all heel stitches have been worked. You will have approximately 16 (18, 20) stitches remaining on the heel flap.

Picking Up Gusset Stitches

Now you reconnect the heel to the instep and begin working in the round again. This is the part new sock-makers often find intimidating, but it is quite simple once you see how it fits together.

Working along the right edge of the heel flap, pick up and BLsl st into each row-end stitch — approximately 14 (16, 18) stitches. Place a marker. BLsl st across the 28 (32, 36) held instep stitches. Place a marker. Pick up and BLsl st into each row-end stitch along the left edge of the heel flap — approximately 14 (16, 18) stitches. BLsl st across the remaining heel stitches to complete the round.

Your total stitch count will be approximately 72 (82, 92) stitches, give or take a stitch depending on your row gauge.

Gusset Decreases

You will now work decrease rounds to bring the foot circumference back down to the original stitch count.

Decrease Round: BLsl st to 2 sts before the first gusset marker, dec, SM, BLsl st across instep stitches, SM, dec, BLsl st to end of round.

Plain Round: BLsl st in each st around.

Alternate these two rounds until you return to 56 (64, 72) stitches total.

Foot

Continue working BLsl st in the round with no increases or decreases until the foot measures 2 inches less than your total desired foot length. The total foot length from back of heel to tip of toe for a women’s size 8 is approximately 9.5 inches, and for a men’s size 10 is approximately 10.5 inches. Measure your own foot or the intended recipient’s foot for the most accurate fit.

Toe

The toe is worked with a simple paired decrease at each side.

Place markers as follows: at the beginning of the round, at the midpoint of the round (28th, 32nd, or 36th stitch), and at the end.

Decrease Round: BLsl st to 2 sts before the first marker, dec, SM, dec, BLsl st to 2 sts before the second marker, dec, SM, dec, BLsl st to end. — 4 sts decreased.

Plain Round: BLsl st in each st around.

Alternate these two rounds until 28 (28, 32) stitches remain, then work only decrease rounds until 16 (16, 20) stitches remain.

Cut the yarn, leaving a 12-inch tail. Thread the tail onto a yarn needle and draw it through the remaining live stitches twice, pulling firmly to close the toe. Alternatively, fold the sock flat so the two sides of the toe are aligned and use a yarn needle to work a simple whip stitch seam. Both closures are neat and comfortable underfoot.

Finishing

Weave in all ends securely using your yarn needle. Pull each end through at least 2 inches of fabric in multiple directions so it does not work loose with washing.

Wet block your finished socks by soaking them in cool water for 20 minutes, gently pressing out the excess water without wringing, then shaping them on sock blockers or stuffing them with a rolled-up towel. Let them dry fully before wearing. Blocking dramatically improves the drape and appearance of back loop slip stitch fabric.

Care Instructions

Most sock yarns with a nylon blend can be machine washed on a gentle cycle in a mesh laundry bag. Lay flat or hang to dry — heat from a dryer can break down elastic fibers in the yarn over time. With proper care, a pair of handmade crochet socks made from quality yarn should last for years.

Tips for Success

If you find your slip stitches are too tight to work comfortably, try loosening your grip on the yarn rather than moving to a larger hook. The tension in back loop slip stitch comes largely from how firmly you hold the working yarn.

If the leg of your sock feels stiff, experiment with a 3 mm hook while maintaining the same yarn. The structure of the stitch will keep the fabric looking tidy even at a slightly looser tension.

To add a personal touch, try working the cuff and a stripe or two around the leg in a contrasting color. Simply join the new color at the beginning of a round and carry or cut the old color as you prefer. The horizontal ridge lines in back loop slip stitch make stripes look exceptionally clean and sharp.

For a more reinforced heel, hold two strands of yarn together — the main yarn and a single thin strand of reinforcement thread — throughout the heel flap and heel turn sections only. This is an old knitter’s trick that transfers beautifully to crochet.

Final Thoughts

The back loop slip stitch may be the most underrated technique in all of crochet. Paired with a quality sock yarn and a well-fitted pattern, it produces handmade socks that rival the feel and durability of much more complicated constructions. The fabric is smooth, the texture is elegant, and the process is genuinely meditative once you find your rhythm.

Whether you are making these socks for yourself, as a gift, or as part of a larger crafting practice, you will find that the back loop slip stitch rewards your attention. Make your gauge swatch, trust the process through the heel turn, and before long you will be slipping on a pair of the coziest handmade socks you have ever owned — and immediately planning the next pair in a different colorway.