Sock protects wearer's foot or leg during trekking, snowboarding, rambling, skiing etc and features air cushion between two knitted surfaces in section between top edge and ankle

摘要

The knitted surfaces comprise an inner surface (1a) and an outer surface (1b). The top edge of the sock end (7) forms the reversal fold and the draping (9) closes the two knitted surfaces. An air cushion (10) is located between the surfaces.