Hey, word of warning. If you thaw out the jumbo, and put it by your snake, and get a weird feeling like it's too big- listen to your instincts. Maizey never regurged until I fed him a huge mouse, technically within limits, but I still wondered, but thought, well, if he gets it down, then it's ok. He got it down, but regurged. That was January. I haven't been able to get him to stop regurging, even 20g mice, ever since. The vet can find no medical reason. Now Maize lives on multiple fuzzies. So far, so good. Never could work him slowly back up to adult mice.