Thermo-Kitty Duplex Cages Includes universal bicycle hitch -

Includes universal bicycle hitch - extra hitches available

The special insulation inside the bed captures your pet's heat and radiates the warmth back to your pet

Recommended for newborns to 3 years of age

it is made of solid steel

Thermo-Kitty Duplex Cages Includes universal bicycle hitch -With the luxury of a heated sleeping surface on one side, your cat will cherish the ability to choose whatever its heart desires. This roomy duplex can accommodate more than one cat and also has an optional middle divider that can be attached on the inside creating two private sleeping areas. The sturdy design allows for sleeping or playing on the roof surface as well. The K&H Thermo Kitty Duplex will become every cats favorite dwelling place,