Heavy Duty Workwear Heavy Duty Workwear

BIOSx Tough Terrain Workwear Compression Socks - Black

Sale price$59.95

Trusted by those who build, lift, move, and make — the ones who never cut corners when it comes to comfort and support

Size: Small
Sizing Wear & Care

Sizing Guide

For the perfect fit, take a quick measurement of the widest part of your calf. Our compression socks are expertly designed to provide the ideal level of compression for their purpose. If your calf measurement is between sizes, go with how you prefer your compression socks to feel. If you prefer a firmer compression, go with the smaller size. 

BIOSx Full Length Compression Sock Size Guide:

Shoe Size Small Medium Medium -
Large Calf
Large Large -
Large Calf
X-Large
EU 35 - 37.5 38 - 41.5 38 - 41.5 42 - 46 42 - 46 46.5 - 48.5
AU - Mens 3.5 - 5.5 6 - 8 6 - 8 9 - 12 9 - 12 12.5 - 14
AU - Womens 5 - 7 7.5 - 9.5 7.5 - 9.5 10 - 13 10 - 13 14 - 15.5
CALF SIZE
CM 30 - 37 32 - 37 38 - 43 36 - 40 41 - 46 43 - 50
Inch 11.75 - 14.5 12.5 - 14.5 15 - 17 14 - 15.75 16 - 18 17 - 19.75

If you need additional assistance with sizing, feel free to contact us at support@biosx.com.au.

Care & Maintenance Guide

Proper care ensures your BIOSx compression socks last longer and continue delivering maximum comfort and performance.

Washing Instructions:

  • For best results, hand wash after each use to maintain durability.
  • Prefer machine washing? Use a gentle warm cycle (max 30ºC) with similar colours.
  • Bonus points for placing them in a mesh laundry bag and selecting the hand-wash setting.

    Drying Tips:

    • Avoid wringing them out—give them a gentle squeeze to remove excess water.
    • Air drying is ideal, but if you’re in a pinch, tumble dry on low heat (below 30ºC).
    • Pro tip: As socks age, a short tumble-dry session can help shrink the elastic fibers and restore optimal compression.
    • Never dry in direct sunlight or on heaters/radiators—this can damage the elastic fibers.

      Detergents:

      • Stick to mild detergents only.
      • Avoid fabric softeners and never use bleach.

        Compression Lifespan:

        • Over time, elastic fibres naturally wear down. Replace your socks at least every 6 months to maintain proper compression and support.
        For smaller feet (Men ≤ 6 / Women ≤ 7) and calves 30–37cm
        Fit guided by calf size
        For standard feet (Men ≤ 8 / Women ≤ 9.5) and calves 32–37cm
        Fit guided by calf size
        For standard feet (Men ≤ 8 / Women ≤ 9.5) and broader calves 38–43cm
        Designed for extra calf room
        For larger feet (Men 9–12 / Women 10–13) and calves 36–40cm
        Fit guided by calf size
        For larger feet (Men 9–12 / Women 10–13) and broader calves 41–46cm
        Added stretch for wider calves
        For largest sizes (Men 12.5–14 / Women 14–15.5) and calves 43–50cm
        Fit guided by calf size
        Colour: Black
        Compression Class 1

        Compression Class 1

        Targeted support

        Unbreakable Construction

        Unbreakable Construction

        Reinforced to outlast the toughest days

        Merino Wool + Bamboo Charcoal

        Merino Wool + Bamboo Charcoal

        Regulates temperature. Fights odour. Stays fresh.

        About the BIOSx Tough Terrain Workwear Compression Socks - Black

        Long-haul flights and walking adventures can both take their toll on your feet. Our travel socks are designed with everything that travel involves in mind.

        No one wants to slow their adventure due to sore, achy feet, so our socks offer more protection thanks to impact protection zones, deep pile cushioning and a breathable mesh upper. They offer great support, are full length, and have extra wide arch support just in case your feet expand along with your horizons.

        Key Features

        Supports planter fascia & arch

        Anatomically designed to provide optimal plantar fascia and arch support.

        High shock absorption

        Zoned cushioning to footbed provides all-day comfort and shock absorption.

        Extreme breathability

        Air-X mesh ventilation panels provides optimal breathability for fresh feeling feet all day long.

        Optimises form, stability & foot function

        Seamless, wide toe box facilitates natural toe splay for optimal form, stability and foot function.

        Keeps your feet cool & dry

        Fresh-X moisture-wicking technology keeps your feet cool and dry.

        All day freshness

        Wear more, wash less with premium sustainable yarns that are antimicrobial and anti-odour.

        Accordion image

        Compression Rating

        Moderate 15-20 mmHG

        Compression Guide

        Every pair of BIOSx Compression Socks undergoes rigorous quality checks to ensure a perfect fit and optimum performance. Our expert engineers meticulously inspect each product using top-of-the-line Swiss technology, the Salzmann MST MK V and CMD-100. For added assurance, we randomly inspect cartons before shipping, so you can trust that your socks deliver the support and comfort you deserve.

        Who is Moderate Compression for?

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        View Comparison Chart?

        Target Use

        Firm compression helps relieve more noticeable discomfort, mild varicose veins, and swelling. It is also often recommended for travel or for individuals who are on their feet all day.

        The Benefits of Compression

        Example image

        Improves overall energy levels.

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        Promotes faster muscle recovery.

        Example image

        Reduces chances of blood pooling and clotting.

        Example image

        Improves blood flow (venous return).

        Example image

        Prevents formation of varicose veins.

        Example image

        Reduces build up of lactic acid in muscles.

        Example image

        Reduces tired legs, cankles, and swollen feet.

        Example image

        Prevents injuries by reducing muscle oscillation.

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        Helps relieve foot, calf and ankle pain.

        Wearing & Caring

        The BIOSx difference

        Why Settle for Less When You Can Choose BIOSx Compression Socks?

        Other Socks

        • Inconsistent, generic compression offering minimal or no medical benefits.
        • Non-breathable materials trap moisture, breed odor, and cause discomfort and blisters.
        • Generic one-size-fits-all design ignores anatomical differences, compromising comfort.
        • Mass-produced with unsustainable materials, harming both you and the environment.
        White Sock

        BIOSx Logo – Pronounced ‘bio-socks’

        • TGA-approved, graduated compression with proven health benefits.
        • Breathable, anti-bacterial fabric keeps feet cool, dry, fresh, and blister-free.
        • Anatomically designed for left and right feet to enhance comfort and reduce injury risk.
        • Australian-owned, sustainably crafted with premium yarns that care for you and the planet.

        Our Pledge

        One Pair Purchased = One Tree Planted

        Put your best foot forward—every pair plants a tree and leaves the planet better!

        Find out more
        The Most Advanced, Comfortable and Sustainable Compression Socks

        Bio-Socks — Smart Science. Sharp Style.

        Medically Approved Designs

        100% Australian Designed & Owned

        Customisable Designs (Co-brand)

        100-day money-back guarantee

        Free shipping over A$75