Damp grass?. No problem. When finished, simply pick it up, shake it off, and fold—good to go. Details Outdoor picnic blanket Suitable for damp surfaces Waterproof and sandproof underside Charming blue-and-white plaid pattern 100% polyester material Sponge padding and aluminum-coated film Folds easily to compact size; flap holds it in place Sewn-on handle for easy carrying.