HMCast One Step Type KitHM Cast One Step Type Kit (Cast + Skin protector) Pack of 5 HM (Hybrid Mesh) Cast One Step Type Kit is the cast that allows you to take a shower while wearing the cast. INTRODUCTION Permeability With traditional cast , you have to first wrap the affected area with cotton fabric and bind it with bandage, or tape it with tape or cast bandage. So, it causes itching and odor as you can not have contact with water , which causes great pain on patients