Medical equipment bags and cases hold supplies and equipment used by medical professionals attending to accident scenes, emergency calls, and in-home health exams. Also known as response bags, trauma bags are large, soft-sided bags carried by first responders. Pannier bags are soft-sided bags that fit onto emergency medical services (EMS) bikes. Fanny packs strap around the waist to keep supplies close at hand. Hard-shell cases keep first aid supplies and medical equipment organized and protected.