I am a 6 ft tall, 200 lbs, guy with knees that like a bit more cushion in a mat. With the B Mat Strong Long 6 mm mat, my forehead and toes are always on the mat and the stickiness is excellent for when I warm up and begin to perspire. I always have perfect grip and can stay 'on my mat' throughout my practice. I have seen some reviewers express concern about the odor and I have a good sense of smell and it is almost non-existent and not offensive at all. My wife purchased this for me as a gift, sight-unseen, and I am extremely happy with the description given which matched my expectation. When it comes time for a new mat in the future, I'll get another B Mat.