■ Product Name / Injinji Run Liner Crew ■ Uses / Trail running, running, walking, cycling, track and field, multi-sports ■ Material / CoolMax (75% polyester, 22% nylon, 3% polyurethane) The Injinji Liner series is a thin inner sock that can be worn as an inner sock. Recommended for running, walking, cycling, town use, etc., it can also be worn alone. It provides a natural feel close to bare feet, a comfortable fit, and improves your body's sense of balance, enabling a higher level of performance.