Available in select size options. Made of PVC with purple metallic acrylic. Designed to be whisper-silent. Enjoyable exercise for your small pet. Free standing or on any secure flat support. The virtually silent Bio Bubble Pets Whisper Wheel 6 in - Purple Metallic offers an excellent workout for your small pet and is easy on the ears. This wheel is created with patented technology that make it the most quiet wheel in the pet industry today. It may be used as a freestanding wheel or may sit on top of a non-tip foundation. Safe and comfortable for your favorite tiny pets. Great for hamsters, gerbils, mice, small rats, and sugar gliders. Dimensions:6L x 3W x 6H in.9L x 3W x 6H in. About BioBubble PetsBased out of Boca Raton, Florida, BioBubble pets provides a unique and innovative spin on home habitats for your pets. Whether you require wet, dry, humid, arid, or environments anywhere in between, BioBubble has you covered. Modular in design, each of their products is able to be converted to accommodate nearly any small animal or plant, and they also offer a wide array of accessories. With the owner kept in mind as much as the pets, these products are user friendly and prove to be easily assembled, cleaned, and maintained for years of enjoyment. BioBubble Pets is on the cutting edge of home habitat design, so if you're looking for quality products guaranteed to fit your diverse and unique needs, look no further. Size: 9 inch.