A/M-24 Automatic/Manual Inflatable Blue Life Vest by Full ThrottleA(R). Size: 30- 52 Chest. Designed with precision and functionality in mind, this accessory ensures outstanding performance and easy use which makes it the perfect deal for your ultimate satisfaction.FEATURES:Convertible from automatic/manual to manual only inflationLow profile design keeps you cool in warm weatherProtective cover uses 200 denier nylon ripstop and 200 denier nylon oxford1 buckle and body beltU.S. Coast Guard ApprovedMore comfortable to wear due to wider neckline (stole style only)Soft neoprene neckline (stole style only)Lightweight, low profile, so less bulkRelies on inflatable chamber that provides buoyancy when inflatedBetter in-water performanceEasy to rearm and repackAvailable in one universal adult sizeEquipped with a D-Ring for attaching small accessoriesGreater mobility and a compact design for more comfort and increased wearabilityChamber will inflate when submerged in waterChamber will inflate when pulling the Jerk to Inflate handle, or by breathing into the oral tubeDesigned to enhance your safety on the waterCrafted using high-quality flotation foamProvides long-lasting durabilityExtremely safe and comfortable