Kindly Notice at First: Before unpacking the item, please place a newspaper or other container under it to avoid the grass powder fall down to mess the ground floor Package Included: 1 x T-Shape Hamster Tunnel(like the first image, It's not the whole set) Pet Hamsters, Gerbils, and others, living in human care are safe from dangers like predators or unpleasant weather conditions, yet they still share their wild inhabit instinct like burrowing & digging tunnels in their bedding. We also noticed that most tunnels dug into pet beddings are rather unstable and easy to fall down. We designed this tunnel system with sturdy cellulose tubes to make it safer, to prevent beddings materials squish, or fall on hamsters when digging without tunnel All of the tunnel pieces are compatible with each other, you can follow your setup or cage size to purchase one or 2 more tubes to combine. More combined, more shapes, more fresh explorations to share your hamster enjoyment. General consensus that hamsters need more space for their body and mind well-being, no matter on surface floor or underground space, you can try to build an intricacy environment by our creative DIY tunnels, which given them enough area to explore, exercise, and reduce stress by playing & running & excavating, this secure & cozy hideout also provide their peace and resting place. Tunnel Part is made from Pet-Safe & Earth-Friendly Material like uncolored cardboard, shredded timothy hay, organic calendula petals, and barley grass powders, it's edible and safe to chew. And it smells aromatic. Kindly Notice: 1. Since the tunnel was coated by shredded straw & flower petals & grass powder, the natural property of it is powder or petals will fall down when open and use. If you care about it, please reconsider it before purchase. 2. Unable to wash, please do not place it next to water or fire. Do not put it as children toys.