Soft and durable 100% polypropylene material is breathable and safe for grass. Easy to clean--just sweep away dirt or spray with water. This reversible mat can be used indoors or outdoors, at home on the patio, with your RV, in the park or garden, at picnics, while camping, or at the beach. It's also ideal under pet cages and in exercise pens. The woven construction dries quickly to prevent mold and mildew. The polypropylene material is coated with UV protection to resist sun damage and fading. Corner loops can be staked to hold it in place, and the mat folds easily into a compact size for storage..