In their latest sale, Kohl's has dropped the price on their The Big One® Gel Memory Foam Mattress Topper down to just $39.99 for any size. This is an awesome deal all by itself, as the king size topper is regularly priced at $109.99. Apply code TREAT15 to knock an additional 20% off, bringing the price in at just $33.99. Alternately, Kohl's charge card holders can save an extra 30% off by using the same coupon and paying with their Kohl's card. And everyone will earn $10 in Kohl's Cash for every $50 spent. Sale ends 10/23/2016.