This paragraph with shoulder straps, belts can adjust tightness freely according to their bodies the wearer, transferred to the wearer's own ideal. Using high-performance Taiwan ARS 900 d MAX 2 layers of PU coating high strength checks (solar radiation, uv protection cloth, waterproof) lining with high-density camouflage grid cloth (effective permeability, relaxed outdoor activities). By basf EPE high-density polyethylene foam, soak in water for 24 hours after the loss of buoyancy is not higher than 5%, the tensile test, the strength of more than 160 kg, resistance at the bottom of the cross belt can design, effectively prevent the life vest in the jet stream from the body of people, have excellent protection effect, easy fishing, sea drift, enjoy life