Yamaha Men's 18V3B Value Nylon 3-Buckle PFD - MAR-18V3B-BK-LG. Style on a budget! This Yamaha Value Nylon 3-Buckle PFD is made from heavy-duty coated nylon with three side release buckles for added strength. Features front, side, and back foam for a comfortable fit.. U.S Coast Guard approved and UL listed. Sizes SM~4X