We went inner-tubing this winter in the Santa Fe mountains at the Big Tesuque stop. We realized that inner-tubing is awesome. Lots of cushion. We have a 2-person joined tube with handles that works pretty well. I don’t see it in stores anymore, though. Sledding on a plain plastic sled looks like it hurts a lot more. (We watched people slamming into the ground without any padding and getting the wind knocked out of them.)