1) without wrinkles on surface when it is inflated

2) Good sealing performace

3) Pls do not inflate excessively, do not touch sharp objects, it is only a book size when folded, easy to carry. 
4) Children must be under adult supervision when use.
5) non-toxic harmless PVC material

6) uses the first-class sewing technology, strictly according to international standard and detection. 

7) It It is a good helper for swimming.