My husband keeps a little butterfly garden and gets very excited about the caterpillars, but we rarely see any cocoons. We have a lot of wasps around and I keep telling him we needed to protect the caterpillars. So this Christmas I gave him a cage. Actually two. Right after I ordered this one I went to a local nursery that has a butterfly garden and exhibit. I bought a cage there for about the same price as this one and kind off kicked myself for not having looked there first. But when this one arrived (quickly shipped), I realized it is at least twice the size or more, easier to use, and has the window feature. So it turns out this was the much better option. I also purchased the holders for plant cuttings, which the nursery didn't have. So I'm quite pleased with the purchase. Now to wait for the monarchs to return!