Horizontal & waterproof zipperWe adopted wide open horizontal zipper to get each access easily and quickly. And the upgraded waterproof zipper would offer a better experience while hiking, camping, fishing, and so on. | Attached with 1 beer bottle openerEach Vorspack cooler backpack is attached with 1 beer bottle opener for your convenience. | Multipurpose for outdoor activitiesThis cooler backpack is large enough to pack all your necessities. You can not only take these lunch backpacks for camping bags, it could also play good roles as hiking daypacks, fishing bags, picnic bags, etc. |