The socks offer special customer-requested features:
Naturally soft, luxurious, strong and warm alpaca sock
Heavy thick construction 
Extreme warmth due to alpaca's hollow core fiber
Smooth hollow fiber = warmth and strength without itch
Alpaca is warm even when wet!
Soft cushion terry loop sock interior for cushioned comfort
Naturally breathable fiber wicks away sock moisture
Alpaca fiber naturally odor free
Machine washable and dryable sock (no shrinkage)
Strong durable sock construction for long lasting wear
Smart construction for support without constriction
Non-Slip Bottoms for around the house, Motel, etc!
The AlpacaTrax Gripper Slipper Alpaca Socks are fitted with reinforced heals and toes. A most comfortable sock for around the house, in a motel, in a tent or anywhere you want to wear warm comfortable socks without slipping. 
Materials: 48% alpaca, 40% acrylic, 4% nylon, 8% elastic
Suggested Care: Wash and dry after turning socks inside out.
USA designed, made in Peru