Here's a quick review: When you're with your knees on the mat, for example, to have a soft surface for push-ups, you can already see the first night Trainig the first impressions. If you, however, lies with the entire body on the mat, it has even after frequent use hardly imprints. However, it is beautifully situated on the ground and does not roll back together, as well as soft and big! At that time I paid 16, for the price it is okay, but there are certainly better current 23!