Material: Waterproof lightweight anti-scratch soft polyester, nylon lining, breathable mesh back panel; Nice zipper quality guarantee. If you use it 6 months, and the zipper broken, please contact us for replace backpack.
Double-zippers closure with a 2 inch rope pull allow it easy to open... http://bestgoodini.com/24-teecho-waterproof-cute-backpack-for-girl/