The Adult Universal PFD fits adults more than 90 lbs. (41 Kg) with a 30-52" (76-84cm) chest, durable Nylon with soft foam core, 3 sure-lock buckles, USCG approved, type III PDF, and large arm holes for comfort. RAVE's Universal Nylon Life Jackets are great for a variety of water sports activities. Available in 4 Sizes: INFANT less than 30 lbs. (14 Kg)/16-20" (41-51cm) chest. CHILD 30-50 lbs. (14-23 Kg)/20-25" (51-64cm) chest. YOUTH 50-90 lbs. (23-41 Kg)/25-29" (64-74cm) chest. ADULTS Fits adults more than 90 lbs. (41 Kg)/30-52" (76-84cm) chest Durable Nylon with soft foam core 2