HIC Kitchen's Pop-Up Sponges are tough on dirt yet gentle on delicate surfaces. These Pop-Up Sponges start out compressed for easy, compact storage. Simply add water and the sponge expands to its full size (4.25 x 3.25 x 1-inches). Add them to everyday cleaning supplies for an easy clean on any surface without scratching. Perfect in the kitchen, garage, office, camper and anywhere surfaces need to be cleaned. Designate each color for a specific cleaning task for easy identification. The natural vegetable cellulose material dries quickly to help minimize sour odors. Once sponge is expanded, it will not return to its initial compressed form. Economical and reusable, and dishwasher safe for a thorough cleaning and sanitizing between uses. Squeeze out excess water and allow to air dry. Brought to you by HIC, a third-generation family owned and operated company in the USA since 1957.