Jinhangpower via Amazon offers the JinHam Waterproof 79x79" Waterproof Outdoor Blanket in Blue or Red for $34.99. Coupon code "FB7JJGPI" drops it to $19.24. With free shipping, that's $2 under our September mention, $16 off, and the lowest price we could find. It rolls up to pack and has a carry strap. Deal ends May 30.