I have gained this exercise mat for a recommendation of "Running Bible for beginners". After a training session for long, I was allowed to pick up "in both feet tendinitis" from the physician's diagnosis. In the regeneration time so I have bought og theory book and the recommended mat. The order came as usual within 2 days. I myself then, ignoring the training proposals from the run book, firstonce asked for fun on the mat. The mat feels very comfortable and warm. She tends to pollute something quick and apparently attracts dust magically. They can, however, just a rinse in the shower. After ca. 3 weeks now daily training have become the training complaints in tendons, especially the Achilles tendon area set largely. However, I suggest a suitable book for beginners such training zuzulegen ... or just want to crawl the internet after extended exercise. In short, good and necessary for beginners training support for a reasonable price. Recommended.