Pro Force Reversible Taekwondo & Karate Hogu/Chest Protector Shock absorbent rubber body that is covered in vinyl for added durability. The white shell is reversible showing your choice of either a blue or red target zones on the mid section. Long and elastic shoulder straps cross in back and tie through the side loops with hook and loop fastener to ensure a snug fit. Sizing for chest guards is based on your uniform size, so check the sizing carefully.