What is Cotton Crepe Bandage? 7.5cm x 4.5m crepe bandage for the first aid treatment of emergency injuries. When can I use it? For emergency aid treatment of sports & workplace accidents. To support & immobilise the arm or leg following injuries. To secure & compress dressings in place over open wounds. How does it work? Cotton Crepe Bandages conform easily to all body parts & are a first aid essential. They can be used to secure dressings in place over wounds, to immobilise arms & legs following fractures, or to compress injured areas to prevent swelling.