Signin to Your Account
Questions? Call our tri Specialists! 1-800-445-4790
COVID-19 Response
Castelli Pro Seamless Knee Warmer Black
Click to zoom

Pro Seamless Knee Warmer

Mfg PartNum:
In Stock Now
Ships Free!
Earn $3.49 in Podium Club credit. Click to Learn More.
This size is not eligible for Podium points
Please Confirm Size
Free Shipping on Orders Over $50*

Step Into High Gear With These High-Quality Warmers

Cycling during the cool weather months can be a big guessing game. Starting out, you're freezing! But once you get into your groove, you're on fire. How do you correct this imbalance? To make autumn and spring rides more manageable, the creative minds at Castelli put their heads together as to how to make you stay warm even in chilly temperatures, while also keeping cool after your body heat builds. After working with the professional Ineos cycling team, they developed the Pro Seamless Knee Warmer to enhance your natural body heat without any unnecessary bulk.

Constructed using a unique blend of polyester, nylon, and Lycra® elastane, this lightweight layer provides exceptional warmth and moisture management. With a seamless design, these leg warmers are comfortable to wear as long as you need to, while also stretchy enough to provide a great fit on most body types. Plus, they are super compact, so you can take them off and fold them up to stash in your rear jersey pocket whenever they aren't needed.

These warmers are the ideal choice for early morning or late-night rides in cool to mildly warm weather. So, no more struggling with intermediate temperatures or regretting the decision to wear tights. With the Castelli Pro Seamless Leg Warmer, you can ride like a pro with the gear that will get you through it all.


  • Designed for temperatures 10°C - 20°C (50°F - 98°F)
  • Lightweight 52 grams
  • Mid-weight for comfort
  • Composed of 78% polyester, 15% nylon, and 7% Lycra®
  • Folds up extra small for enhanced packability

  • B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


    Black - S/M

    Mfg PartNum: Q20584010-2 

    Black - L/XL

    Mfg PartNum: Q20584010-4 

    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    A person expects Castelli to do better
    by NMBiker
    Cycling Enthusiast
    New Mexico
    1 of 1 customers found this review helpful.

    These knee warmers are comfortable, easy to get on/off, and plenty warm for me, but they won't stay up. If you get them, plan on stopping every hour or so to pull them back up into your shorts. I have since bought a pair of the Pearl Izumi Elite Thermal Knee Warmers, and they are much better. I am sorry I don't have two pairs of those.

    Reviewed 12/18/2020
    Was this review useful to you? Yes/No
    Thank you for your feedback.