A cat tunnel requires a combination of two or more pieces,you can choose color freely. 1/Made of high quality felt cloth, no smell, no toxic materials, environmentally friendly, scratch resistant. 2/Just easily roll and lock the button to make a pet tunnel for indoor or outdoor to make your cat trained physically and mentally, improves the intelligence, enhance the agility and sensitivity. 3/The button design can turn the mat into a cat play tunnel easily, purchase two or more is a better choice since you can DIY the tunnel with free size and shapes to give your cat endless fun. 4/Using felt fabrics to keep your pet active to scratch, have multiple peek holes for funny tracking play, this cat tube tunnel gives your kitty more ways to have fun, It provides hours of exercise and self-amusement. 5/ when detached, it's convenient for you to use a fur brush wipe off the dust of Specification: Name: Color-blocking Rolling Dragon Cat Nest Cat Toys Material: Felt cloth Specifications: 1 Piece you can choose any colors to DIY Color: as pictured Size: 4259203mm Net weight: about 155 grams Package Includes: 1 pieces of 3MM color matching cat litter cat supplies