Positional Non-Slip Double Layer Yoga MatECO FRIENDLY MATERIAL: Positional Non Slip Double Layer Yoga Mat is made of SGS certified TPE material which is non slip, odor less, and excellent in cushioning, unlike that cheap & traditional non green PVC, NBR, or EVA yoga mats. They are truly eco friendly, healthy, and recyclable. BODY ALIGNMENT LINES: This Positional Non Slip Double Layer Yoga Mat with alignment marks can help you keep the body in proper alignment, create a stable foundation for