Bests & Worsts Reviews from Amazon

When I received the base, I was concerned that the lack of "feet" would cause unnecessary scratching on my wood floors. The reason is that entire base area rests on the floor vs. having pads, or coaster discs on the base where the 4 holes are. But, really, what I wanted was casters in those four holes but I didn't want to pay up to $75 more for a "chair" base for my ball. So, I contacted Isokinetics to ask if they sold casters for this base... it seems as though it is designed for casters with the existing four holes. Their answer was no, they didn't offer that accessory. So, I headed down to my local Home Depot to buy four light duty, ball-bearing casters... some bolts and hardware, all costing less than $14 and added them to the base. Voila, I had the more reasonably priced ball chair base that I wanted in the first place. (I've posted a photo of the modified base on the product page.)