Multiway - hang vertically or horizontally. It can fit 3 rats comfortably and one more if they like to squish, and 1-2 Chins depending on their sizes, when hung horizontally. If you hang it horizontal with the widest part pulled tight you will fit more in. Measures 16" wide at the back x 7" high by 12.5" deep. Eyelet at the top of the entrance so it always stays open. Polar fleece hidden inner with the usual all-over quilting to put off chewers. The Pouch Pod design has been registered with the IP Office, number 6011131, and is a protected design.