Chilly weather leads to stiff knees, and stiff knees lead to a drop-off in both comfort and performance. That's why it's important to layer correctly with our Women's Therminal 2.0 Knee Warmers when the temperature drops. They have a construction that's comprised of our Therminal fabric, which is designed to both insulate and manage moisture buildup. To do so, it has a brushed fleece interior with a light loft that pulls moisture away from skin to evaporate it at the material's surface. This loft also has the added benefit of insulation, which occurs by trapping tiny pockets of warmth between the skin and the fabric. At the exterior, you'll find light levels of wind and water protection that'll have you riding comfortably through mixed conditions. As for fit, the warmers have an articulated design that conforms to the area around the knee and its various positions and movements while cycling. And to ensure that they stay set where you want them, we've included a light silicone print to gently hold them in place.