This mat is unique because it has a multifunctional strap! It is the only Yoga mat with an attachable/detachable shoulder strap that attaches directly to the mat. This allows the strap to act as a carrying/shoulder strap. It is the only mat that can hang in the shower for washing or air drying. Additionally, the strap comes off the mat and becomes an exercise strap to help with deeper stretches and performing more difficult poses. The strap is adjustable in length and has a locking clip so it won't slip when you apply pressure to it. Bacteria and mildew can develop on mats that are not dried thoroughly before being rolled up. After sweating on a yoga mat, people put their faces, feet, hands and rears on their mats, then roll them up and put them in a 100 degree car. The Stick-e Yoga Mat is the only mat that can be hung to easily be washed or air dried! Don't put your face and hands on a bacteria infested mat! The mat is reversible with black on one side and blue on the other with center lines to help with proper body alignment when posing.