Mustang MD5183, Elite Inflatable PFD. Built on a revolutionary 3D chassis, the Elite Inflatable PFD stays put at high speeds, lets you move the way you want and NEED to and provides automatic inflation powered by Hydrostatic Inflator Technology. The 3D chassis reduces drag at speed, the wide shoulder system eliminates neck fatigue, a wicking mesh liner improves all-day comfort, dual-side adjusters ease fit and an exclusive sleek inflation handle prevents snags. The bright fluorescent yellow-green inflation cell provides 28 lb buoyancy when inflated and improves visibility in a rescue scenario. 30"-52" chest, 80 lbs and over.