At first I wanted to give back my Kanken. I saw it and I thought "What is it? Poor quality, so light, it can't be solid". Than I understood that it's a Kanken secret. Backpack is light, comftable, size and shape gives many opportunities (I have inside my tablet 11", cosmetics, sunglasses, boxes with food and I still have space for some shopping, umbrella, water... It's funny because Kanken looks rather small. Inly one thing: all of them should have normal, thicker arm pads. Tiny, little strips are uncomfortable. They can make scratches and bruises on arms. I ordered pads on ebay but I had problem. And I paid 30$.