For the world travelers who include their best friends in their journey, the Traveler Backpak-o-Pet's top half is a regular pet carrier and the bottom half is a separate, zip-on/zip-off compartment that has a 6" depth. A sleeping bag can be strapped on underneath the compartment. Thanks to a few world travelers, here are the Traveler Backpak-o-Pets with color selections reflecting the nature. Material/Color: Dual Tone Nylon in Sky & Ocean Blue, Forest & Spring Green, and Brick Red & Earth Grey Themes: Sky and Ocean, Forest and Green, Earth and Wood Dimensions (top carrier): Set up: 20" (L) x 11.5"(W) x 12.5"(H) Base*: 20" (L) x 11.5"(W) x 8"(H) (* for in-cabin airline travel reference) Bottom Compartment: 20" (L) x 11.5"(W) x 6"(H) Weight: 9 lbs. 14 oz. (including accessories)