Have used it a few times. It is a thick mat with adequate foam, can be used for exercises which put pressure on knees and elbows like planks and knee lunges or even stretching. It is lengthy as well . Only 2 drawback I found till now that if subjected to sharp pressure like dragging of pointed nails against it , it may rip off and also the material is not eco friendly.
I used it every day for my exercises. I love this mat. It has good padding so my knees are taken care of. The colour was a very nice blue. Length is also very nice. Tools up well and the black secure straps hold both sides nicely