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 19cm wide, 10cm high, and 10cm deep. It can fit 3-4 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 wash it in a washing machine, please put it in a laundry net!!