2-Color Yoga Mats (4mm)Choose the color your in the mood for with these 2 Color Yoga Mats. These mats have a stable non slip surface, keeping you in place in any pose, and 3mm of cushioning to keep you comfortable. With a different color on either side, these mats are reversible, so you can choose which your in the mood for. Manufactured free of latex and the top six most harmful phthalates and each come with Gaiam's lifetime guarantee. Light tack non slip surface