The Nekochan Tunnel System U-J-I is the ultimate hiding place for your cat or small dog. It consists of three independent components which can be used alone or in combination. Each tunnel is made of easy-care, hard-wearing plush fabric with upholstery. The tunnels can be connected with zippers concealed by velcro fasteners. The J-Tunnel has 2 zpper openings, the I-Tunnel 4, while the U-Tunnel has 3 zipper openings. This leads to a big amount of combination options, which challenge your four-legged friend daily and offer a big temptation to keep exploring the new landscape of tunnels.