Most online mattresses are bed-in-a-box products, which involves compressing and rolling the mattress so it fits in a cylinder-shaped box for shipping. One of the exceptions is Saatva, which delivers its mattresses the traditional way and offers free white-glove delivery service that includes unpacking and set-up. The bed-in-a-box concept has its critics, who hold the opinion that the compression process degrades the quality of the materials.