Yamaha Nylon Side-Entry PFD 18VSE - Black (Small/Medium). Look good while you put safety first with the Yamaha Nylon Side-Entry PFD. Made from heavy-duty coated nylon with a convenient side entry. Features front, side, and back foam for a comfortable fit.. Adjustable straps and three side release buckles for added safety. U.S Coast Guard approved and UL listed. Sizes SD (SM/MD), MD (MD/LG)