Yeah I was extremely disappointed to find that the medium was so much bigger than the small, and that the measurements given on the RBI site don't accurately reflect the size of the hide (footprint, instead of usable area). As a result, my babies don't fit well in the smalls, but the mediums are waaaaay too big for their tubs. I'll keep supplementing with my trimmed-down cereal box hides until they are big enough for the next stage.

v