The Pearl iZumi Elite Thermal Knee Warmers in black, size small, are perfect for outdoor cycling in winter and fall. Made from a blend of polyester, nylon, elastane, and lycra, these knee warmers are water resistant, thermal, and feature non-slip grippers for a secure fit. Machine washable and designed with stretch for comfort, these warmers are suitable for both men and women cyclists looking to stay warm during cold weather rides.