Viekoo via Amazon offers the Prooral Orthopedic Memory Foam Office Chair and Car Seat Cushion in Grey for $26.99. Coupon code "KR8P8JPQ" cuts the price to $19.97. With free shipping, that's $7 off list and the lowest price we could find. It measures 17.7" x 14" x 2.8", features a non-sliding rubber base, and is made from advanced memory foam. Deal ends January 30.