Bests & Worsts Reviews from Amazon

These mats are great as an under mat for weights and lifting equipment; as well as, lessoning the impact on joints. I have about a 12' x 12' area set up in the basement. For some people, there have been issues with them coming apart which I did notice myself. To resolve this, I simply taped the backside of all the pieces with 3" wide gorilla tape (see photo). It works very well and has held up for plyometric routines, burpees, mountain climbers, etc. If you need to mark off an area on the top of the mats, then I'd suggest gaffers tape. The mats have held up and there is no crumbling of the foam. Plus they are easy to clean/ wipe down.