Hello Matt, and welcome to the forum. Your hammy is lovely and his cage and playground are very nice. As your hammy grows you will want to give him a bigger home and you'll definitely need a bigger playpen. There are all kinds of great playpens members have made here on the DYI, so check them out. You can buy playpens for Syrians, but it's a whole lot cheaper to make them yourself. I'm looking forward to seeing more of Morisse.