Craft Sportswear Men's Stay Cool Bike Cycling Training Athletic Socks: riding/accessories/wicking/dry/fit/protection/feet/footwear lycra 80% polymide,17% nanoglide, 3% Lycra Bike specific features for optimal comfort and performance. Channel stitch ultra thin upper allow for air circulation to cool down your feet. wash with smiliar colors, do not use softner, wash inside out, tunble dry low, do not iron Sweden