The True Flex Technology built into the Hyperlite Prime Life Vest makes this one of the most comfortable options in or out of the water It combines Segmented Foam Panels with a special neoprene construction to give you a vest that moves with you instead of blocking you off That neoprene also gives the vest superior drainability helping you weigh less once you?re out of the water or standing up behind the boat And since the US Coast Guard and Transport Canada have both signed off on this design you can take comfort knowing it?s a fully qualified ?life saving device?