Wildkin backpacks are sized for pre-schoolers to second graders. * 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