Review on IncStores 1/2 Inch Thick Diamond Soft Foam Flooring Tiles High-Density Interlocking Foam Tiles For Rugged Style In Your Home Gym, Playroom, And More Black, 6 Tiles by Tracy Heidebrink

2 day delivery (not Prime). This is a great product, I am using it underneath our portable / inflatable spa to suppliment the thin "air bubble" padded floor that came with the spa (Bestway Palm Springs tub). Product went together quickly and appears to be high quality. I chose this because it's supposed to be water proof (not water resistant). I will follow up on how well that it performs when I take down and move the tub. Highly recommend for this use and I'm sure it would be great for exercise use.