1, size: customized according to the water area or idea/designs
2,material: 0.9mm PVC tarpaulin,inside strings/stripes PVC tarpaulin as well
3,all joins/welds to be double reinforced
4,connecting:10cm wide velcro+pvc flap cover, Double D rings+nylon tape
5,anchor points: at the bottom of each units, usually for 4cornes, double D rings fixed
to tie a weigh with hooks like the same way of boat
6, one or two auto air release valves fixed to make sure a normal air pressure inside
