SLEEP on it mattress store - Harrisonburg, VA - 540-432-9316 SLEEP on it came to Harrisonburg as the Waterbed Shack in 1988, as a sister store to the Waterbed Shack of Waynesboro. That store first opened its doors in 1980 and became the Valley’s first waterbed store. As regular mattresses, futons, and specialty products such as air beds, Swedish foam, latex foam, and adjustable beds became popular sellers for the company, it’s name was changed to ...