I ordered Springtek Ortho Pocket Spring 6-inch King Size Mattress (White, 78x72x6) during big billion sale. The product is of superb and unmatched quality. Very prompt service from Ashoka Foam Group (the manufacturer) and Amazon. I had contacted the seller for size related issue, so that it fits my furniture. My query was swiftly responded and taken care of and reached well ahead of delivery date. I'm planning to purchase one more mattress soon. The company has excellent expertise in the product domain since 1968. I would highly recommend for purchasing of these mattresses to others.