Generally, we use marine life jackets. The inside of the material is made of EVA foam, which is compressed and 3D molded, and its thickness is about 4 cm (5-6 pieces of thin hair material produced in China, about 5-7 cm thick). Life jackets produced according to standard specifications have their own buoyancy standards: 7.5 kg/24 hours for adults and 5 kg/24 hours for children, so as to ensure that the surface above the chest rises. The surface is made of materials with good water resistance and air permeability, and in addition to paying attention to its buoyancy, it is also necessary to pay attention to whether the cross-belt interface is damaged to prevent it from floating without gravity after entering the water.
How to use a marine life jacket
1. Put the whistle bag of the life jacket on the body with the whistle bag facing outward.
2. Pull the zipper, tighten the front collar strap with both hands, and tie the neck band
3. The straps under the award are crossed and tied on the left and right sides of the front body.
4. Check whether each place is firmly tied after wearing it.
