These sturdy backpacks are constructed with nylon made entirely from recycled plastic water bottles and trimmed with naturally biodegradable canvas. Each pack removes four 16oz. plastic bottles from the environment. The large interior space contains a smaller zipped pocket. Padded straps & back panel. Sized for ages two to five. (9 x 12 x 5.5"). Beatrix is an uber cool company from New York. These great back packs are cool and earth friendly. Great eco school bags.