The adjustable, short-bladed Trek Travel Fins from U.S. Divers are easy to pack, lightweight, and great for traveling snorkelers. With an adjustable heel strap to fine tune the fit and a super-soft comfortable foot pocket, the fins do not cause the blisters and pain associated with so many swim fins (particularly the ones you rent.) The dual-composite fin blade delivers an excellent snap in the water, and offers great power and styling that is suitable for multiple water sports including snorkeling, bodyboarding, and swimming.