Size：25*23.5*9CM. BPA-free & Phthalate-free Best for children aged 2 to 6 years. Dual adjustable comfy straps in air max back material, perfect for preschool, and travel. WATERPROOF ENVIRONMENTAL NEOPRENE-This kids backpack is made of environmental durable neoprene (SBR material) which is soft. Hand wash only and air dry to clean.