Colgate 3 Sided contour changing pad turns any flat surface into a baby changing station. Firm foam idges on three sides provide a secure cocoon for baby while changing diapers. A strong rigid wood fiberboard support board and a safety strap add security. Screws (included) attach to the back of a dresser or changing table and secures pad to the furniture. Easy clean white quilted cover cleans up nicely with a damp cloth and mild soap. This product uses high quality CertiPUR US certified foam and is GREENGUARD certified to produce no harmful air emissions or volatile organic compounds. Lastly, the contour changing pad is made by Colgate, The Crib Mattress Specialist, who has been making mattresses and, trusted by parents for over half a century.Pad dimensions are: 16" W X 33" L X 4" H.