Here's what other sites are saying:
The Dahlgren Alpaca ultralight trail socks keep feet dry and comfortable during outdoor recreation. Zone construction puts support and padding where it's best suited, resulting in excellent fit and feel. Alpaca wool/merino wool blend offers superb moisture absorption to prevent blisters. Toe/heel is constructed of 63% merino wool, 27% alpaca wool and 10% nylon. Arch/instep is constructed of 75% acrylic and 25% nylon. Cuff is constructed of 90% acrylic and 10% nylon. Seconds; item has minor cosmetic blemishes that do not affect product performance.
- REI refers to the men's version