Mini Igloos come in four cool colors and they're made of translucent plastic so you can see your pet inside. Igloos are constructed from durable plastic making them easy to clean, plus they're odor and stain resistant. Igloos one piece design is easy to use and every Igloo has fresh air vents to ensure your pets health and well-being. Mini Igloos make a "Cool" hide-out for hamsters, gerbils, pet rats and other little critters.7.75" long, 6" wide, 4.5" high. Encourages natural nesting instincts in small animals.