Backpack Bag, Canvas Double Shoulder Strap Geometric Stripe Design - MulticolorDetails With our roomy and durable backpack, you will! This bag is made from spun polyester and weights 1. 3 lbs, just enough to be light, strong and long lasting. Grab it, stow it, throw it onto the seat next to you, this backpack can take it, and so will you, wherever you go! .: Made of 100% Polyester .: Lightweight and waterproof .: Adjustable shoulder straps