The cat interactive toy tunnels have a diameter of 25cm/9.8". The T shape size is 80cm/31.5" x 50cm/19.7" with a middle top pop-out hole of 14cm/5.5" in diameter. Weight 300g/10.6oz The cat tube is made from durable 190T polyester, two layers with crinkle sounding paper layer in between to attract the pet's attention and increase their interest Our cat tunnel toy is a 3 way tube with an additional top hole giving them 4 access/exit points in total, with an interactive hanging furry ball at one entrance to play with The pet play tunnel is suitable for kittens, cats, puppies, small and junior dogs, rabbits, ferrets and other small animals The cats tunnel is fully collapsible and comes with an elastic fabric band to tie it flat for storage.