The Louis Garneau's Knee Warmers 2 strike an effective balance between providing the insulation you need at the knee and limiting the amount of gear you need. Made of Garneau's Heatmaxx fabric, a polyester and elastane blend with a brushed fleece back to retain body heat, these knee warmers provide breathable, warm comfort as you log mile after miler. A silicone gripper at the thigh keeps each knee warmer from sliding down and bunching at the knee, and flatlock seams ensure minimal friction against your skin. A reflective logo on the shin adds some extra visibility, and these knee warmers also have a UPF/SPF rating of 50.