30cm*22cm*11cm(11.81in*8.66in*4.33in) . This is an adorable little toddler backpack. Perfect little backpack for 2-3 year old. The backpack contains two compartments. Inside the small compartment can be placed ipad, picture books. The main compartment can be placed daily replacement clothing, toys, favorite snacks. The front pocket is big and it can be used for pens, highlighters, handkerchiefs, keys, ipad, notebooks etc. A telescopic bag is attached to both sides for an umbrella and a water cup. The lightweight backpack is made of durable water resistant nylon and easy to clean. It weights 0.3kg only. The strap is made of 3D breathable mesh to protect the shoulder and dissipate heat quickly.