Harmony Mats are the natural chocie for yoga! With its open-cell, natural rubber design, the Harmony mat offers excellent traction, even when wet from perspiration. Thicker, denser and tougher than standard mats, the Harmony provides a solid, non-slip platform for Ashtanga, Iyengar, Bikram, Kripalu and Vinyasa styles -- and for anyone who wants extra comfort. Natural rubber is a renewable resource made from rubber trees. Harmony contains no ozone depleting substances and is biodegradable. Measures: 24"x74"x3/16". Weight: about 5 lbs.