Just upgraded to a 3 person tube so no need for our 1 person tube.
Sportstuff Zip Ski. Has a nylon cover so the bottom is flat. Boston valve for quick inflating and deflating. Since we don’t have a place on the water it has always been stored deflated tucked away in the boat so it’s in perfect shape. I’m not including the rope since we’re using that with the new tube.
Tube:
Perfect shot of the bottom of the tube. 
