High Quality Comfort Yoga Blocks for Stability, Optimal Alignment and Increased Strength Exercising Firm and very comfortable. Provides stability and balance to help with optimal alignment, deeper poses and increased strength Easy-to-grip texture and made from durable, supportive foam Large enough to sit and stand on comfortably for meditation practices and stretching Spot clean with mild detergent - Use Towel or Air Dry Measures 8.5" L x 5.5" W x 3" H