This Picnic Blanket is Constructed with a Waterproof Peva Backing in Order to Keep Out Moisture, for Comfortable Seating & Easy Clean-up. Finished with Thick Oxford Polyester Top & Waterproof PVC Bottom, the Sandproof Beach Mat is Sturdy to Prevent From Ripping or Tearing. It Will Keep You Dry & Comfortable From the Grass, Sand. Ideal for Grass, Picnics, Camping, Beach, Outdoor Concerts, Tailgates, Stadium, Sporting Events & Any Other Time Youll be Hanging Out Outside. Minimum Quantity: 50