Sportime This mat solves two of your needs. It is our top quality Yoga mat and we have added the crunch testing strips for your assessment needs. What a great way to stretch your budget and get two uses in one product. This mat is 3/8 in. thick closed cell foam for a great surface that will not slip. The mat measures 68 x 24 in. for a full size yoga mat. The mats can be rolled up or stored flat whichever works for you. The set includes 6 colors - RedYellow Blue Green Orange and Purple.