PurEarth Ekko Mat 4mm Blue is made of eco friendly TPE (Thermo Plastic Elastomer & Rubber). Dual sided pattern and use, featuring extra long 72" length. Navy Blue Color. Antibacterial closed cell design for easy cleaning. Latex free, non toxic, decomposable, degradable & very light weight for travel. Good choice of regular or hot yoga. Free internet downloadable instructional video & exercise chart.