Curious as my cat is has the same tunnel explored. In the first few days she has the tunnel not so often used (shunned) because the textiles do not have / given their plant production stench of like it in like new goods is often the case. (Tip: After unpacking the vent in the garden or on the balcony ask)
But after that the cat had their fun with the tube: D She often plays out of the tube out, she hides it or used the thing as their sleeping place :) The balls, which is attached to one of the 3 outputs still hangs there. She did not so often played with it. All in all a beautiful product, you can easily pack the tube (along dip to around 3 cm), they can be inside and outside use. The cat makes it fun. The product photo is not quite true color. Although the color tones agree about - but are much flash, so something like the typical marker colors. Mir gefällts)