Our compression socks come in six sizes, designed for both men and women. Sizing is based on two key measurements: your standard shoe size and your calf circumference, which is measured around the widest part of your calf.

For Medium and Large sizes, we also offer an Extended Calf option for those who need a larger, more accommodating fit. These versions maintain the same foot and leg length but feature a roomier calf area for added comfort.

If you’re between sizes, choose based on your preferred level of compression. For a firmer fit, opt for the smaller size. If you prefer milder compression, go for the larger size.

Need help? Our customer service team is happy to assist! Email us at support@biosx.com.au or via the Chat for expert guidance.

All BIOSx compression socks deliver the same core benefits of compression—improving circulation, reducing swelling and fatigue, and enhancing comfort. However, each category is designed with specific features, compression levels, and materials optimised for different activities and needs.

Whether you need everyday comfort, enhanced performance, travel support, heavy-duty durability, or faster recovery, there’s a BIOSx sock designed for you. Visit our product pages to explore the unique features of each style and find the perfect fit for your lifestyle.

To experience the full benefits of BIOSx compression socks, it’s important to wear them correctly. Follow these steps for the best fit and performance:

1. Prepare the sock: Turn the leg inside out, leaving the foot section as a bootie.
2. Slip on your foot: Place your toes into the sock and gently slide your heel in. Make sure to wear the correct sock—"R" for your right foot and "L" for your left.
3. Pull up gradually: Slowly slide the sock up your calf, ensuring the fabric is evenly distributed and smooth.
4. Avoid overstretching: Do not pull the sock too high or fold it over at the top.
5. Proper placement: The sock should sit just below your knee for optimal compression and comfort.
   

To keep your BIOSx compression socks in best condition, please follow these care instructions:

• Hand wash or machine wash at a maximum temperature of 30ºC (cold wash) with similar colours.
  
• Avoid tumble drying—hang your socks to air dry in a shaded area, away from direct sunlight.
  
• Do not use bleach, fabric softeners, or dryer sheets, as they can damage the compression fibres and may reduce performance.

Yes! Every BIOSx product is backed by our warranty and 100-day risk-free happiness guarantee. If your BIOSx compression socks arrive damaged or don’t meet reasonable expectations, we’ll give you a full refund. We offer a 100-day satisfaction guarantee—if you’re not happy, return them, no questions asked.

Placing an order is simple!

1. Browse our collection and add your chosen items to your shopping cart.
2. When you’re ready, proceed to checkout.
3. Fill in your shipping and billing information.
4. Complete your purchase securely using your preferred payment method.

You’ll receive an order confirmation email, and we’ll get started on preparing your order right away!

BIOSx is primarily available through our online store, but we also have approved resellers across Australia. To find a stockist near you, contact us at support@biosx.com.au, and we’ll be happy to assist!

We offer a variety of secure payment options to make your purchase easy and convenient:

• Credit Cards: Visa, Mastercard, American Express
• Digital Wallets: PayPal, Apple Pay, Google Pay, Shop Pay
• Buy Now, Pay Later: Afterpay
• Bank & Local Payment Methods: Bancontact, Eftpos, iDeal, UnionPay
  

At checkout, simply select your preferred payment method and follow the prompts to complete your order.

Yes, all prices listed on our website include GST/VAT, so there are no hidden fees at checkout.

We offer free, carbon-neutral shipping on orders over A$75 in Australia and New Zealand.

For orders below A$75:

• Australia: A$7.95 shipping fee
• New Zealand: A$14.95 shipping fee

For international shipping rates and thresholds outside these regions, please check our shipping page for country-specific details.

Our fulfilment process is fast! Orders placed before 2 p.m. on business days are shipped the same day.

Once your order is dispatched, you'll receive a shipping confirmation email with a tracking link to stay updated on its journey.

Estimated delivery times:

• Australia: 1–7 business days
• New Zealand: 3–10 business days

Delivery times may vary based on your location and courier delays.

We want you to love your BIOSx compression socks! That’s why we offer a 100-day satisfaction guarantee.

If you’re not completely happy with your purchase, you can return your order within 100 days for a full refund of the purchase amount. Please ensure the socks are returned with the original packaging and packing list.

Unfortunately, we are unable to cover return shipping costs.

For more details or to start a return, contact us at support@biosx.com.au.

We understand that sometimes a product ordered online isn’t quite right, which is why we offer a 100-day happiness guarantee period for BIOSx compression socks.

However, once a sock has been worn, we cannot resell it due to hygiene reasons. While Australian law does not require retailers to accept returns on socks or underwear, we still want to give our customers this option.

To keep this policy viable, we unfortunately cannot cover return shipping costs.

We’re also committed to sustainability and circularity. We’re actively seeking partners to help repurpose used socks so their yarns can be safely reused in industrial applications. For any questions or return requests, contact us at support@biosx.com.au.

Once we receive your return, we’ll process your refund within 14 business days. You’ll receive an email confirmation as soon as the refund has been issued. Please note that processing times may vary depending on your payment provider.

At this time, we do not offer direct exchanges. If you’d like a different size, color, or product, please place a new order.

You can return your original order following our [return policy], and we’ll issue a refund once we receive your return.

For assistance, feel free to contact us at support@biosx.com.au.