* 900D waterproof fabric, but the zipper is not waterproof
* Backpack exclude helmet,basketball,water bladder,but fit full face helmet,basketball,2L water bladder and so on.* High strength thicken alloy zipper, Molle system backpack
* Can be used as a Hydration Bladder Backpack
* Fit different types of sports full face or half face helmet, basketball and so on.