TreadTop seats are designed to be usable at both a standing desk and on top of an under-desk office treadmill. To be used on top of a treadmill these seats have to be extremely stable, and have to have a base that will not damage the integrity of the tread belt.
At WorkWhileWalking we’ve conducted a highly detailed lab review of every treadtop seating option on the market today, all of which you can find below.
Note that if you’re looking for a treadtop seat the very first filter you should use in your search is the diameter of the base. Most legitimate office treadmills have a belt that’s at least 20″ wide, and will accommodate most of these chairs and stools.
However, some of the junky “walking pad” units made in China get as narrow as 14″ (not really usable as an underdesk treadmill but definitely marketed as one) and most of these treadtop seats will not fit on them. On the other end of the spectrum we have the McHale StableChair which has a 26″-wide base and the only office treadmill wide enough to handle it is the iMovR Unsit with it’s 30″-wide belt (for which it was specifically designed).