Onyx - General Purpose Nylon Life Vest - Child - Red - 103000-100-001-12. Features:. 200 denier nylon and 150 denier poly-twill. Adjustable belts and chest strap. Lightweight and durable flotation foam. Features a leg strap for added safety. Fits 30-50 lb. children. * U.S. Coast Guard Approved Type III Life Jacket / Personal Flotation Device (PFD)