1. The fabric used by waterproof nylon 420D + PU x 2 2. You have 3 choices for floaters, including EVA, EPE and NBR. The material is made from non-absorbent, high density rubber with process waterproof 2 times. 3. The floaters size: . Chest: 35mm . Backside: 25mm . Waist: 25mm . Pillowcase: 25mm 4. Buoyancy: . XL size can support the maxi . Weight is 120kgs in the water L size can support the maxi . Weight is 110kgs in the water M size can support the maxi . Weight is 100kgs in the water 5. Adding 2 breast pockets on chest, and fixed lid 6. Can stick 2 reflective tapes on chest and back jacket 7. Color: blue, red, yellow, fluorescent orange