Pilates and Yoga have been proven to strengthen and lengthen the entire body while focusing on the core. The Pilates mat workout will reduce back pain over time as the core/abs become stronger. The Natural Fitness Eco-Smart Pilates Mat helps make your practice clean and green. The Mat is made from PER (Polymer Environmental Resin), an innovative material that is safer for our environment and your health than mats made from standard PVC foam. The Eco-Smart Mat does not contain harmful phthalates or toxic chemicals and all of these products ship for free.