At Phiinom we sell mainly neoprene life jackets. Neoprene is the material that wetsuits are made out of. While neoprene costs slightly more, it lasts way longer and provides more comfort. Neoprene life jackets are intended to be very tight when new. They will relax 10-20% after a few uses. If a life vest is tight it will hug the user's body and not ride up.