Please understand that this is handmade, so there may be some uneven stitching. Thank you for your purchase! The inside of the house uses fleece, which is a favorite of sugar gliders(^^) There's cotton in the bottom, so it's fluffy(≧∇≦)b It's 11.5cm wide, 14.5cm high, and 9cm deep. Two sugar gliders can fit inside٩(ˊᗜˋ*)و It can be attached to the side of both acrylic and wire cages( ￣▽￣)ゞ It can also be used as a freestanding house. Please wash by hand!! If you use a washing machine, please put it in a laundry net!!