Designed for maximum comfort and usability, the E-Ronny offers a highly functional pocket layout and incorporates industry first technologies Thin-Vent(TM) Back design and bluesignA(R) certified 100% recycled polyester shell. Technical Details:- Intended Use: Rec / Tour / Fishing Entry: Center Front Zip Foam Insert: GaiaA(R) + Recyclable PE Foam Shell Fabric: bluesignA(R) approved, 100% Recycled, 300D Diamond RPET Liner Fabric: 200 Denier High Tenacity Nylon Webbing: Polypro Zipper: YKKA(R) Self Locking Vislon Teeth Hardware: Heavy Duty Acetal Weight: 1.02 lbs / 16.32 oz / 462.66 gr Sizing: S/M = 31-37" M/L = 38-44" L/XL = 45-51" Design Buoyancy: 16lbs Approval Type: USCG Type III