OS1st AC4 Active Comfort Socks


Size: S
Price:
Sale price$43.99
  • Free exchanges if the size isn’t right
  • Not sure which brace fits your condition? Ask our team.
  • Ships same day on orders before 3pm — arrives in 1–2 business days
  • Clinician-recommended — trusted by Canadian physiotherapists

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Description

Built for runners, gym sessions, pickleball matches, and long workdays alike, the AC4 Active Comfort sock combines bamboo charcoal yarns, light arch compression, and balanced cushioning so the foot feels supported without bulk or distraction.

Best Used For

  • Running, training, and gym workouts
  • Pickleball, tennis, and other multidirectional court sports
  • Long workdays and time on hard floors
  • Daily wear inside athletic and everyday footwear

Key Features

  • Balanced cushioning that absorbs impact while staying responsive
  • Light arch compression for a supported, stay-put fit
  • Seamless construction designed to help reduce friction
  • Moisture-managing yarns built around bamboo charcoal and nylon
  • Roomy toe box that allows natural toe splay

Size And Fit

The AC4 is sized S through XL and sold one pair per box. Sizing is based on shoe size — compare your everyday footwear against the chart below.

  • Sizes: S, M, L, XL
  • Colours include Black, White, Grey, Charcoal, Aqua, Royal Blue, Lime Fusion, Orange, and Pink Fusion
  • One pair per box
  • 79% Nylon, 17% Bamboo Charcoal, 4% LYCRA Spandex

OS1st AC4 Active Comfort Socks Size Chart

Care Instructions

  • Machine wash cold on gentle cycle
  • Tumble dry on low heat
  • No bleach
  • No fabric softener

Shipping And Returns

Shipping
Free shipping on all orders across Canada. Ships within 1 business day via tracked courier. Typical delivery: 1–2 business days.

Return Policy
We stand behind our product and offer a hassle-free return policy, ensuring that you can return the product if it doesn't fit properly or doesn't meet your expectations.

Frequently Asked Questions

What activities is the AC4 best for? The AC4 is an everyday active sock — runners, gym-goers, pickleball players, and people on their feet all day get the most out of it.

How many pairs come in a box? One pair per box. If you want a few rotations for the week, order multiple.

Is the compression noticeable? It's light and even, focused around the arch. Most wearers describe it as a supportive hug rather than tight compression.

Does the bamboo charcoal blend really help with odour? The bamboo charcoal yarn is woven through the sock to help manage moisture, which is the main driver of foot odour throughout the day.

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