Mercori Health and Fitness 1/2-inch Extra Thick NBR Comfort Foam Yoga Mat Memory foam designed 1/2"-Ultra-thick yoga mat. Durable NBR material, soft and comfortable, easy to clean. Help protect your knees and joints, keep your balance during exercise. One side ribbed surface and the other smooth. The non-slip surface grips the floor to prevent injuries Dimensions: 68" x 24" x 0.5. Ensures comfort for people of all shapes and sizes A FREE yoga mat strap is included