BIOSx Elite Performance Crew Compression Socks - Black
BIOSx Elite Performance Crew Compression Socks - Black
BIOSx Elite Performance Crew Compression Socks - Black
BIOSx Elite Performance Crew Compression Socks - Black
BIOSx Elite Performance Crew Compression Socks - Black
BIOSx Elite Performance Crew Compression Socks - Black
BIOSx Elite Performance Crew Compression Socks - Black
Performance Performance

BIOSx Elite Performance Crew Compression Socks - Black

Sale price$29.95

It's time to unlock your true potential. Elite Performance Compression Socks combats fatigue, stops cramps, and delivers power and control when it counts most.

Size: Small
Sizing Wear & Care

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
        Color: Black
        Black Crisp White
        Compression Class 1

        Compression Class 1

        Compression for power & precision

        X-Wrap™ Stabiliser

        X-Wrap™ Stabiliser

        Foot-locking support for unmatched stability.

        Fresh-X™ Material

        Fresh-X™ Material

        Wicks sweat fast. Dries 5x faster than cotton.

        About the BIOSx Elite Performance Crew Compression Socks - Black

        Built to unlock your full potential. BIOSx Elite Performance Compression Socks boost muscle oxygenation, fight fatigue, and deliver locked-in support to reduce cramps and shin splints. Lightweight, breathable TENCEL™ fibres are ultra-soft and naturally sourced—keeping you cool, dry, and focused from the first rep to the final whistle.

        Key Features

        Intelligent Graduated Compression

        Boosts circulation and oxygen delivery to muscles for more power, endurance and faster recovery.

        TENCEL™ Advanced Fibre Technology

        Silky-soft, naturally breathable, and engineered to wick moisture fast. With Fresh-X™ fibres and built-in anti-bacterial protection, your feet stay cool, dry, and odour-free under pressure.

        Cramp & Shin Splint Defence

        Supports key muscle groups to reduce the risk of cramps, fatigue, and shin pain during intense activity.

        Wrap-X™ Foot Stabiliser

        Our proprietary tech locks in your foot for unmatched stability, agility, and control—reducing muscle fatigue and lowering strains and injury risk with every move.

        Targeted Athlete Support

        Strategic arch compression cradles the foot to reduce strain on the plantar fascia—perfect for athletes prone to foot pain or plantar fasciitis. A seamless, wide toe box allows natural toe splay, promoting proper foot alignment, stability, and powerful movement.

        Lightweight Cushioning

        Strategic padding absorbs impact while keeping the sock light and fast—perfect for explosive effort.

        Accordion image

        Compression Rating

        Firm 20-25 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 this compression level for?

        Perfect for athletes, runners, cyclists, fitness professionals, and anyone pushing their performance to the next level. Whether you're training, competing, or recovering, these socks deliver the support, stability, and muscle recovery you need to go further—day after day.

        Target Use

        This compression level is designed for active individuals and athletes who train hard, perform at their best, and want to bounce back stronger the next day. Whether you're training or competing, it helps boost circulation, reduce muscle fatigue, and support optimal performance—while also helping prevent strain, overuse injuries, and long-term burnout. Ideal for anyone who wants to move better, feel better, and stay in the game longer.

        The Benefits of Compression

        Example image

        Improves overall energy levels.

        Example image

        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.

        Train Harder. Perform Better. Recover Like a Pro.

        BIOSx Compression Socks, The World’s Most Advanced Compression for better Circulation, Endurance, and Recovery.

        40%

        Better Blood Flow

        40%
        Maximise Muscle Performance

        Feel the difference from the first wear. BIOSx promotes blood flow and muscle oxygenation and prevents pooling, whether you’re at your desk or on your feet.

        Proven in workplace clinical trials (Morris et al.)

        90%

        Less Risk of DVT

        90%
        Fly Without Fear

        Smart travellers wear BIOSx. Clinically shown to reduce the risk of blood clots during long-haul travel by 90%.

        Cochrane Review, 2,800+ participants (Lassen et al.)

        50%

        Less Fatigue

        50%
        Say Goodbye to Tired, Achy and Heavy Legs

        Clinically proven to reduce lower limb fatigue and swelling by over 50%.

        Verified in 12-hour standing trials (Rabe et al.)

        60%

        Reduction in Swelling

        60%
        End the Pain of Varicose Veins

        BIOSx Compression significantly reduce heaviness, aching, and leg swelling in those with venous issues.

        Placebo-controlled study (Partsch et al.)

        48hrs

        Faster Recovery

        48hrs
        Get Back in the Game Sooner

        BIOSx speeds up recovery — cutting muscle soreness by 42% in 24 hours and up to 61% within 48 hours. Less pain, more gain.

        Meta-analysis of 12 sports studies (Bieuzen et al., 2014)

        47%

        Better Circulation

        47%
        Feel lighter, stand longer, and move easier

        BIOSx eases pregnancy-related swelling so you feel light, supported, and energised.

        Observational study on third-trimester leg circulation (Blottner et al.)

        Wearing & Caring

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        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

        Covering All The Bases

        See our Collections

        Everyday

        The secret to peak performance from sunrise to sunset. Uniquely designed for those standing, sitting, or always on the move.

        Travel

        First-class comfort for your feet, even in economy. Say goodbye to swelling and cankles.

        Performance

        Engineered for greatness—be faster, stronger, and unstoppable with every step.

        Recovery

        Rapid recovery starts here—feel fresher, faster while your socks do the heavy lifting.

        Tough Workwear

        Tough as nails, soft as wool. Work socks that never quit.

        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

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