Sock with wider fit leg. Mesh ventilation section in the back of the leg to allow air to circulate. Ventiltion section on top of foot for improved breathability. Fully coshioned loop knit construction in foot. Elasticated ankle and arch support. Anti bunching system to minimise extra fabrics and folds when flexing the foot. Flat toe seam. Washing Instructions Machine wash 30° Do not bleach. Do not tumble dry. Do not iron. Do not dry clean.