Made of premium quality bamboo; %80 rayon from bamboo, %17 polyamide, %3 elastane. Imported from Europe. Seamless, comfortable socks are perfect for everyday wear. Better for circulation, naturally antibacterial. Helps control sweaty feet. Reinforced heel and toe prevent breaking, ensure last long. Fits to shoe size 6-9 & 9-12. Machine Washable with similar colors. For the best result, turn them inside out before placing in washing machine. Wash gently in warm or cool water (86F max) with mild soap, careful to avoid bleach or fabric softener. Tumble dry on low setting.