The Hyde Wingman PFD is a lifejacket for people who won’t wear lifejackets, but should. It was designed as a self-rescue device for triathletes during the swim leg of a race, so it fits the body like a tank top and doesn’t interfere with swimming. It’s that comfortable. The wingman (this vest watches over a swimmer like a “wingman”) is an pull-cord inflatable that isn’t Coast Guard approved. $299, www.hydewingman.com