* IPX-7 airtight zipper provides leak-proof and increase air tightness.

* Thick lid and food-grade cotton offer superior insulation, holding the ice and         keeping the drinks cold for 48 hours.

* An adjustable elastic rope on the top of the cover can put towel or  clothes,umbrellas and other daily necessities.

*The upper and down ABS cover provice leakproof and abrasion-resistant protection.