NWOT Manduka eKO Yoga Mat - For Women and Men in Acai Midnight The eKO 5mm Yoga Mat provides a naturally grippy surface. Eco-friendly and biodegradable, this non-Amazon harvested tree rubber yoga mat firmly supports both your practice and our planet. DESIGN & FEATURES: Developed by yoga teachers over 4 years Most durable natural rubber yoga mat on the market No PVC or harmful plasticizers Made from biodegradable, non-Amazon harvested, natural tree rubber with non-toxic foaming agents and non-AZO dyes 99% Latex free Length: 71in, Width: 24in, Thickness: 5mm it is natural rubber, so there is color variation.