Sleepy's, LLC was a retail mattress chain with over 1,000 stores, primarily situated in the northeastern United States.

In 1977, Sleepy's opened its eighth store and relocated its corporate offices and warehouse to a 20,000-square-foot (1,900 m2) space in New Hyde Park.

[citation needed] In 1994, the 75th store opened and the corporate headquarters and distribution center moved to Bethpage, NY in a 150,000-square-foot (14,000 m2) building that was expanded in 1995 to 80,000 square feet (7,400 m2).

[5] In 2009, Sleepy's acquired the assets of Dial-A-Mattress International and 1-800-Mattress Corp.,[6] including its two domain names, and a year later the Connecticut mattress specialty chain Better Bedding.

[11][12] Sleepy's carried mattress brands including Sealy, Serta, Simmons, Beautyrest, Posturepedic, Tempur-Pedic, King Koil, and Stearns & Foster.

Like other major retailers, Sleepy's carried mattress lines that were unique to the seller, so there was no way to compare prices with their competitors.

[13][14] Sleepy's stores were located primarily in the Northeastern, Mid-Atlantic and the Midwest, including Connecticut, Delaware, District of Columbia, Illinois, Indiana, Maine, Massachusetts, Maryland, New Hampshire, New Jersey, New York, North Carolina, Pennsylvania, Rhode Island, South Carolina, Virginia, Vermont, and West Virginia.

In addition to the payment the company agreed to clearer advertising, issuing refunds more willingly and improving customer service.

As part of the settlement, Sleepy's agreed to pay a total of $200,000, which includes restitution to consumers and penalties, as well as a commitment to new policies and procedures to achieve full compliance with local and state laws.

[19] In April 2011 Sleepy's was cleared by Connecticut Attorney General George Jepsen of charges regarding complaints of bed bug infestations and accusations of reselling used mattresses.