life jacket; Waterproof; Conveniently swimming; Keep safe in the water. life jacketMaterial: 1.5mm--3.5mm neoprene/nylon/lycra (optional);Color: red, blue, yellow, black, etc (optional);Size: SS#,S#,M#,L#,XL# (optional);Package: each a poly bag (optional);Zipper: YBS, YKK, DBM, etc (optional);Logo: welcome OEM;Material Test: SGS;Product Test: CE & ATSM.