Business backpack waterproof model

Waterproof x Slim" Don't mind the rainy day. Slim waterproof business backpack.
A new waterproof model of a slim business backpack for both business and daily use. Tire tubes, watertight fasteners, and waterproof nylon create an overwhelming waterproof performance, allowing you to carry it with peace of mind even in a sudden rainstorm. The backpack has a cushioned PC compartment that can hold up to a 15-inch Mac book pro, and is surprisingly compact, even though it can easily hold an A4 file. It can be carried smartly in crowded places or on trains. The surface of the backpack is made of tire tube and the surface is made of tough 1680d nylon, making it extremely tough, waterproof, and stain resistant. The back and shoulder areas have mesh processing, making it comfortable to carry even in hot weather.