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2 Year Warranty

Crash replacement

Aero Calf Sleeves WattSaver Black


Introducing the future of performance-enhancing gear: our revolutionary WattSaver Socks. Carefully tested in the Silverstone Sports Engineering hub wind tunnel, we can say for sure that they are super fast socks that save you averaging 3 watts @ 45 km/h compared with our old model, which tested the same as many other market-leading aero socks.…

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Introducing the future of performance-enhancing gear: our revolutionary WattSaver Aero Calf Sleeves Black. Crafted with completely new fabrics and engineered with innovative aerodynamic principles, these socks redefine speed and comfort for athletes and enthusiasts alike.

Unleash your potential with socks designed to push the boundaries of aerodynamics. Our team has meticulously researched and implemented aerodynamic laws into every stitch, ensuring that you experience unparalleled speed and efficiency with every stride. Compared to other calf sleeves on the market, WattSaver boasts a remarkable 4w@45km/h faster performance, giving you the competitive edge you need to excel.

But speed is just one aspect of our calf sleeves. We understand that comfort and fit are paramount. That’s why 4Cyclists WattSaver Aero Calf Sleeves are fully customizable to fit you as precisely as possible. Say goodbye to one-size-fits-all solutions and hello to personalized performance. Whether you’re sprinting, cycling, or competing in any high-speed activity, these socks will conform to your unique foot shape for optimal support and comfort.

Furthermore, we offer you the opportunity to unleash your creativity with our custom design feature. Express your individuality and team spirit by designing your unique patterns and colours. Stand out from the crowd while enjoying the unbeatable performance.

Experience the future of athletic performance where cutting-edge technology meets personalized comfort and style. Unlock your full potential and leave the competition in the dust.

As we know how terrible is to trash your new kit, we do have a crash replacement. However, if your kit is damaged in the first year of purchase time, send us an email with pictures. After that, we will give you a 50% discount on the regular price for the new kit in the same colour, model and size. Stay upright! Stay safe!

You should take a few extra precautions while washing your kit. We made some guidelines to improve the longevity of your cycling clothes. Check it out and extend your cycling kit life!


Regular shipping

Opt for our free regular shipping, perfect for those without urgency.
Delivery may take up to 4 weeks based on location. Tracking isn’t available.

Want your items sooner?

Select our express shipping, delivering in approximately 5 working days (location dependent). For orders over 150 euros, express shipping is free, ensuring your items arrive swiftly.


You have a generous 14-day window to return items that are unused, damaged, or unwashed. Enjoy free returns, and once processed, receive a voucher for your next purchase. Your satisfaction is our priority!