The Prest-O-Fit Aero-Weave Breathable Outdoor Mat is better on grass than ordinary patio mats! It is made of PVC-coated polyester mesh allowing air and sunlight to flow through. It is UV-protected to prevent sun damage and fading. Brass grommets are included for easy stake-down. It is simple to clean with soap and water. It comes in a reusable zipper-bag for compact and convenient storage.