Thule 32L backpack is the best deal available on Amazon currently. You can get it for $69.99 at the moment, with 39% discount! This is one of the best backpacks on the market – it has enough room for all bulky objects such as books or board games, but its crush-proof compartment safeguards all fragile gear you have as well. You can put your bottles of water in a side pocket to be close at hand, which is a must for hiking. It has a dedicated sleeve for your iPad as well.