The Endura Engineered Knee Warmers are mid weight warmers. Their Engineered construction provides pre-shaped comfort without additional seams. They are high elasticity for an unrestrictive fit and a varied pattern provides high breathability that maintains body temperature. Endura Engineered Knee Warmers Features Engineered construction provides pre-shaped comfort without additional seams High elasticity for an unrestrictive fit Varied pattern provides high breathability that maintains body temperature Single seam, lightweight packable design Endura Engineered Knee Warmers Materials Nylon 87% / Elastane 10% / Polyester 3%