Inflate one time could last 15days.
1.
5 mm EVA non-slip deck mat
2.
Outer layer PVC: 0.7 mm high density PVC water proof fabric
3.
Inner layer PVC
4.
reinforced fabric
5.
High strength dropstitch
6.
0.7 mm high density PVC water proof fabric
7.
0.7 mm reinforced seal fabric