This Waterproof Picnic Mat Won't Budge, Even on Windy Days

Picnic season is upon us: Time for outside snacking, beers on the grass, sun on the face, and wind in the hair. These good times are often--and unfortunately--punctuated by the scourge of ground-sitters the world over: the inevitable wet butt mark that comes from settling down on damp earth. If only there was something to protect you!