EcoSox light weight crew length hiking socks have a half-cushion design to provide cushioning under foot for comfort and are thin on top for optimal cooling and heat exchange. Natural moisture wicking bamboo viscose yarn breathes to help keep feet dry, clean, and blister free. A versatile sock for multi-day hikes, quick treks, or navigating city blocks. This product plants 1 tree through our re-forestation initiative with one tree planted. Packaging comes with a stamp. This product plant one tree". Imported. 78% bamboo viscose, 10% polyester, 6% rubber, 5% nylon, 1% spandex.