I hope someone in the comment tells him that this aspen chips doesn't hold tunnel well. It has to be mixed with other substrates for it to be able to hold tunnels when the hamster burrows/digs into it. I own a long haired Syrian and combing is the only way to not get any tangle and get rid of any beddings that sticks to the coat. I use fine comb (flea comb) for this purpose. Your cage is very nice, I like it very much. I wish I could spoil my hamsters the same way you did.