Add to basket, Sealy Advantage Upton Mattress, Regular/Firmer Tension, Super King SizeSealy Advantage Upton Mattress, Regular/Firmer Tension, Super King Size£1,049.00Product review details, this product has received, on average, 4.80 out of 5 star rating.There are 10 reviewsCompareSelect for product comparison, Sealy Advantage Upton Mattress, Regular/Firmer Tension, Super King SizeOnline only | Exclusive to John Lewis