The only correct mattress at the right thickness, especially if you are using it outdoors or have knee issues.

It is small. Ok, it's my fault for not seeing the length, but why should there be a mat 1.42 meters long? This is a mat for babies! I assumed it was obvious that a gymnastics mat would be at least taller than the average height of a woman...
I'll overlook that - besides being small, it also slips! I almost broke my nose two or three times because of sweat. Useless in the end, I want to get my money back in a month or two and buy another one. Don't buy it.

Satisfactory size and quite thick and soft enough to absorb the weight of their body and have a good feeling