Please understand that this is handmade, so there may be some uneven stitching. Thank you for your purchase! The inside of the pouch uses fleece that sugar gliders love(^^) There's cotton in the bottom, so it's fluffy(≧∇≦)b It's 18cm wide, 9cm high, and 9cm deep. It can fit 2-3 sugar gliders٩(ˊᗜˋ*)و It can be attached to the ceiling and sides of both acrylic and wire cages( ￣▽￣)ゞ Please wash by hand!! If you use a washing machine, please put it in a laundry net!!