The underside surface is often made of wire to prevent them tunneling out if it is to become put on flat floor at your garden. Lining it which has a generous volume of straw, wood pellets, along with other safe bedding materials will ensure their legs never get damage. There?�s https://maps.google.com/maps?ll=37.501593,127.037737&z=16&t=m&hl=ko&gl=KR&mapclient=embed&cid=386021914840433506