Astronaut White Backpack Accessory Great for storing all of your space gear. Includes: Top compartment is for your Astronaut Suit or boots, the bottom compartment stores your Astronaut Helmet and side pocket for tools, etc. Also has a three way harness system for comfort and gives a realistic look and feel. Child Size. Approximate dimensions of backpack are 17.5 x 7.5 x 8.5 inches.