I'm not sure you'd want to subject it to grass stains or beach sand but D. Porthault, the French company famed for their luxurious sheets, have created the first-ever cashmere picnic blanket. The 51" x 71" cashmere picnic blanket by D. Porthault is decorated with their signature Hounds & Rope design. The blanket retails for $3,600, and is also available with a tiger print design for $3,400.