Habitrail OVO Tree House Cardboard Hamster Maze OVO interactive chewable maze tree house allow to hind food and treats for hamster to find These unique cardboard mazes tree house are design to provide hour of foraging fun for hamster Chewable mazes have pre-cut slots to hold the food or treats in place This product weight is 0.45-pound Measures 18-inch length by 10-inch width by 1-1/5-inch height