NOT YOUR AVERAGE BACKPACK - More substance, less hype. Complies with 'NO BRAND LABEL' and 'NO LOGO' school polices HIGHER SPEC, BETTER VALUE - Read the reviews on many backpacks and you'll find the straps are tearing out at the top. That's why this Laser bag follows a better design found on more expensive backpacks... so it won't let you down at the most inconvenient time MUCH MORE DURABLE - The outer material of this bag is made from NYLON. Yes it really is nylon. Many bags will claim they are nylon but in reality they are made from polyester. Polyester is cheaper and doesn't wear as well as nylon