These adorable back sacks arrived today! They are great for kids on the go --- use them for school, sports, camp, library books or that special over-nighter! They've been specially sized for younger children and come with a water resistant lining and a hidden inner pocket for keys, notes or small change. Back sacks are 13" W X 16.5" H and come in a variety of designs. They also match perfectly with the stainless steel kids' water bottles that we sell in store.