Yoga & Exercise mat in one, either bare feet or shoes with aggressive bottoms are no problem. Guarantee no ripples, no waves, and no wrinkles in it. No rising from the surface. Guarantee no Buckling. Odorless, free from toxic phthalates, no heavy metals, hard to kick out of position, no other cheap mats can compare. Superior cushioning quality for more added support than standard mats. Premium foam technology with amazing stability and added comfort. Durable and resilient non-slip support with excellent fraction and grip.