GoodNites Underwear are the most absorbent pant for boys and girls ages 4 and up. Specially made to protect while lying down, they help keep pajamas and bedding dry all night long and feature plush comfort with a discreet design.GoodNites are 40% more absorbent than other solutions. They offer protection in any sleeping position and are designed for kids 4 and up, clothing sizes 4-14. The right protection is key to drier nights, so GoodNites Underwear come in a variety of sizes for growing kids ages 4 and up. Our small/medium size is similar to clothing sizes 4-8; large/extra-large is similar to 8-14.