Sock Guy Kona Socks SMALL/MEDIUM (37-42) 0.8" high 4.1" wide 75% moisture wicking micro denier acrylic, 15% nylon, 10% spandex for exceptional comfort and strength Mesh upper above your foot allows maximum ventilation and breathability Easy fit cuff features a non-binding cuff Stretch -to-fit, 2 size system Warm weather sock