Castelli Thermoflex 2 Knee Warmer Black

Stay comfortable and protected when the temperature drops with these premium knee warmers, designed for cyclists who ride in cool but dry conditions.

Why youll appreciate them

• Made with Thermoflex fleece fabric that is warm, stretchy, and soft against the skin ideal for chilly autumn or spring rides.

• Dual-sided silicone grippers at the top edge keep the warmers securely in place, preventing them from sliding during your ride.

• Single-piece construction with flat-lock seams minimises bulk and ensures comfort without irritation, even during long efforts.

• The insulated fleece traps air effectively to regulate warmth, making these suitable for temperatures between 8 0C and 20 0C.

• Lightweight and packable easily stored in a jersey pocket when conditions warm up mid-ride.

Ideal for riders who

• Face cooler rides and want extra warmth without resorting to full leg warmers or tights.

• Ride in dry or slightly damp weather and prioritise insulation and comfort over waterproofing.

• Prefer minimalist, high-quality gear that performs consistently and fits seamlessly into their setup.

What it means for your ride
With these knee warmers, youll keep your joints warm and muscles supple on early morning rides, cool descents, or unpredictable transitional days. They provide just the right amount of coverage to bridge the gap between shorts and full-length tights ideal for flexible, adaptable riding.

Pro tip for use
Slide the warmers on with your shorts already in place, ensuring the silicone grippers sit flush against your skin. Adjust for a snug but comfortable fit before riding. After each use, wash gently with mild detergent and air-dry to preserve fabric stretch and insulation.