Trauma dressings were developed to stem substantial bleeding on a temporary basis. As such they can be lifesaving and its well worth the time and effort involved in carrying one. Trauma dressing are elasticated and easy to apply: Locate the pad over the wound and then wind the bandage section around the arm or leg or torso. Immediate medical attention should be sought.
The Blue Dot Trauma Dressing is fantastic value, individually sealed for sterility and weights just 70g. Its well worth finding space in your pack for one or two.