Features: Material: Winter warm insole material of natural wool from the sheep better insulators than synthetics. Scope of Application: Ideal for outdoor activities skiing hiking fishing cycling and to prevent your feet from getting cold. Combat the cold in the home riding outdoors or working in the cold outdoors. Easy to Clean: Thermal Insoles Foot Warmer are easy to clean wash in warm water gently wring out do not fade not pilling. Durable and can be worn for a long time. Excellent Workmanship: The workmanship is perfect stitched tightly with the skin the fleece won't fall off and it won't leave fuzz on the socks. Customer Support: If you have any problem please feel free to contact us we will reply you within 24 hours. Specification: Material: Alpaca Wool and Felt Size: Size 35 36 37 38 39 40 41 42 43 44 45 Insole Length(cm) 22.5 23.0 23.5 34.0 24.5 25.0 25.5 26.0 26.5 27.0 27.5 Color:Brown Notes:Please allow slight tolerances in size due to manual measurement and lighting in photography may result in a difference in color than in real. includes: 1*Pair Insoles "