The front instep opens wide, so it is easy to put on and take off. ● Soft material reduces pain such as bunions and deformation. Weight: Approx. 5.5 oz (155 g) (L, One Foot): Material: Surface: 28% Polyester, 50% Cotton, 22% Rayon, Interior: 100% Polyester, Sole: Synthetic sole (EVA resin); The system may specify the delivery date and time of delivery, but please be aware that you cannot specify the delivery date.