Sleepline Bedding is a good óle southern manufacturer of promotional mattresses. The company is located in the heart of furniture country USA in sweet home Liberty, North Carolina. Can't get any more country than that. We make great and cheap mattresses . Being country, however, does not necessarily mean we aren't one of the most forward thinking factories in the marketplace. We are. As a matter of fact, style, technology, design, and innovation are part of our everyday being, We are Sleepline Bedding!