All Kritter Keepers have well-ventilated lids in assorted colors and may be used as space-saving aquariums or insect havens, but are also ideal for use as small animal keepers, kritter totes, terrariums or nurseries. Rectangular Kritter Keepers have self-locking lids with a hinged viewer/feeder windows Airline access hole and an attachment hole (except Mini and Small sizes) Mini, Small and Medium sizes have carrying handles for easy transport This is an offering for multi quantity bundle – 5 count