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Turn up the volume on your knitting with Boombox Sox—a pattern that hums with retro rhythm and cosy charm. Textured stripes groove along the foot, slouchy legs sway with effortless style, and the heel flap bursts into colour with a bold boombox motif—your own stitched anthem to the mixtape days.

Every pair tells a story of nostalgia and joy, where yarn meets beat and comfort meets creativity. Boombox Sox isn’t just a pattern—it’s a love song for your feet, played in wool and warmth.

Slip them on, feel the rhythm, and let your stitches dance to their own tune.

Worked in the round, this pattern provides both cuff-down and toe-up instructions for a seamless sock, accompanied by charts for each pattern motif. While the pattern comes with instructions for a heel flap and gusset, it’s adaptable to your personal preferences and unique feet (omitting the colourwork). Links for alternative heels have been included!

With multiple sizes, you can easily achieve the perfect fit with the intended negative ease. I’ve written this sock pattern with magic loop in mind. However, you can also work on double-pointed needles instead if you’d prefer (just use extra markers to denote the instep and sole stitches).

To further assist you, a link is provided that contains additional resources, such as yarn substitutes and a technique playlist. These tools give you everything you need to create your masterpiece confidently.

SKILL LEVEL
Easy

SIZE INFORMATION
1 (2, 3, 4, 5, 6, 7, 8, 9, 10, 11) — larger sizes are in bold throughout the pattern to help differentiate the multiple sizes.

FINISHED MEASUREMENTS
(Measured around the ball of the foot)
6 (6.5, 7, 7.5, 8, 8.5, 9, 9.5, 10, 10.5, 11)” / 15 (16.5, 18, 19, 20.5, 21.5, 23, 24, 25.5, 26.5, 28) cm circumference — select a size from the finished measurements that is 1-1.5” / 2.5-4 cm smaller than your foot circumference. These socks are worn with negative ease. We made the sample pair from the toe-up directions in Size 5.

NOTIONS
Tapestry needle, scissors, tape measure, stitch marker (1)

SUGGESTED NEEDLES
US1 (2.25 mm) 40” / 100 cm circular needles, or size required to get gauge
US3 (3.25 mm) 40” / 100 cm circular needles, or two sizes larger than gauge needles

YARN REQUIREMENTS
200-500 yd / 183-458 m of fingering weight yarn (depending on the length of your foot and leg), made up of 5 colours, broken down as follows:
CC for both toes (CC1-5 of your choosing): 8 (11, 13, 16, 19, 22, 26, 29, 33, 37, 41) yd / 7 (10, 12, 15, 17, 20, 24, 27, 30, 34, 37) m
For each foot repeat (number of repeats will depend on your desired foot length):
CC1: 1 (1, 1, 1, 1, 2, 2, 2, 2, 2, 2) yd / 1 (1, 1, 1, 1, 2, 2, 2, 2, 2, 2) m
CC4 & CC5: 3 (3, 3, 4, 4, 4, 4, 4, 5, 5, 5) yd / 3 (3, 3, 4, 4, 4, 4, 4, 5, 5, 5) m each
For both heel flaps:
CC1: 30 (37, 45, 52, 61, 70, 79, 89, 100, 111, 123) yd / 27 (34, 41, 48, 56, 64, 72, 81, 91, 101, 112) m
CC2, CC3, CC4 & CC5: 1 (1, 1, 1, 1, 1, 1, 1, 1, 1, 1) yd / 1 (1, 1, 1, 1, 1, 1, 1, 1, 1, 1) m each
For each leg repeat (number of repeats will depend on your desired leg length):
CC2 & CC3: 6 (7, 7, 8, 8, 9, 9, 10, 10, 11, 11) yd / 5 (6, 6, 7, 7, 8, 8, 9, 9, 10, 10) m each
CC for both cuffs (CC1-5 of your choosing): 13 (15, 16, 17, 18, 19, 20, 21, 22, 24, 25) yd / 12 (14, 15, 16, 16, 17, 18, 19, 20, 22, 23) m

SUGGESTED YARN
Hypnotic Yarn — Plush Sock
85% Superwash Merino 15% Nylon
87 yd (80 m) / 0.75 oz (20 g)
CC1: Undead & Fabulous (Black)
CC2: Ghoul’s Night Out (Green)
CC3: Hex Appeal (Orange)
CC4: Zombie Prom Queen (Pink)
CC5: Mummy Dearest (Blue)
https://hypnoticyarn.com/

GAUGE
32 stitches by 40 rounds in stockinette on smaller needles = 4” / 10 cm, after blocking. Gauge is crucial in obtaining the correct fit. Changes in gauge will cause a size difference for your finished socks.

LOW-VISIBILITY & SCREEN READER FORMAT A low-visibility and a screen-reader-accessible version of this pattern are available with this pattern purchase. The low-visibility format is 24pt print in Arial, black font, no italics, and contains written directions (there are no charts to work from). The screen reader format has all the items mentioned above, contains no abbreviations, and accessibility was checked by the read-aloud function on both a Windows PC and Android device.

This pattern has been professionally tech-edited.