This was great. I really liked that this one zipped up unlike others that just had a small velcro piece. I would just freak out if a caterpillar got out. We were able to have a number of giant swallowtail caterpillars/chrysalis in it. Thought if I bought the 15.99 one it wouldn't have the vouchers for caterpillars but it did. So that was a surprise. I think this is the best one on the market.