Wildkin backpacks are sized for pre-schoolers to second graders. (Note: Backpacks are suitable for kindergarten through second grade. They are not designed to take multiple folders, books, etc.) * Product Material: 600D/300D Polyester * Product Weight: 1 lbs. * Durable exterior polyester fabric: Printed fabric 300 denier, black fabric 600 denier * Interior Nylon lining * Adjustable padded straps * Sized for ages 3+ * Two zippered compartments with interior storage pockets * Backpacks are suitable for kindergarten through second grade. They are not designed to take multiple folders, books, etc.