Meditate with minimal fuss using the prAna Tantra Mat Holder. Slip easily into and out of class using a simple one-size-fits-all strap to carry your yoga mat. A motivational message creates positive energy. Recycled polyester webbing easily attaches to the ends of your yoga mat creating a shoulder strap to carry your mat with. Adjustable to fit any size mat. 1.5 (3.8 cm) wide. 100% Recycled Polyester. Material: Recycled Polyester.