They work great. My son takes karate and some of the weapons they use come in large cardboard container, same TP roll shape. Cut in half, they're big enough for adults. My snakes prefer these over the other hides in their vivs. I've got a couple in the corner of my room to use as the others get soiled, but they last a long time. A local karate school would probably save a few for you if you asked them....Just a thought in case you like them........:dancer: