Product features<br>1, material the use of waterproof, anti tear, light resistant nyloncloth<br>2, in addition to the main chamber, the front side, the increase ofthe external multiple storage warehouse, can be separately placeditems;<br>3, the bottom shoe warehouse to warehouse isolation usingprincipal<br>4, the top plug device can bundle of moisture-proof pad and otheritems<br>5, the main warehouse capacity regulation system can adjust thecapacity of the knapsack<br>6, close the ventilation net by thickening the sponge, play a goodprotective ventilation function<br><br>Specification<br>Materials: waterproof, anti tear advanced nylon cloth<br>Capacity:50L<br>Dimensions: height * width * thickness53*32*22cm/21*12.6*8.7inches<br>Inside Holder can hold up to 15" Laptop<br>Use: mountain climbing, camping, leisure, travel<br>