Non-Slip Anti-Skid Gentle Spa Soothing Premium Tranquility Shower Mat Square - Safety Non Slip Tub Square Bath shower Mat (Clear) Soothing textured surface provides gentle massage for tired feet. Square design is perfect for showers! Made of 100% allergen-free PVC. Machine washable. Dimensions: 21" long by 21" wide (53cm x 53cm).