Discover the CritterTrail Difference with the Double Decker Habitat! Two levels of living and a built in nesting nook make the Double Decker the ideal home for your smallest furry friends. The included exercise Comfort Wheel, tip-proof food dish and drip-resistant water bottle completes this compact habitat. Bubble Wave Fun-nel Tubes provide an easy way for your pet to access all areas of the habitat. Front and top wire doors allow for easy access to your pet. Ideal for mice, dwarf hamsters, hamsters and gerbils.  6mm wire spacing provides security for even the smallest furry friends. Improved detachable design makes assembly easier and cleaning a breeze! Enhanced door locks offer easy access and added security. Don't forget there is room to grow since the habitat can attach to other Critter Trail Habitats to create an expanded environment. If you dream it, you can build it!  Habitat measures 14.5"L x 11"W x 12"H