Because Overnight Booster Pads – 180 Count Adds up to 4 cups of extra absorbency when used with protective underwear. Designed for extended wear and overnight use. Product Details: • 180 count pack • Adds up to 4 cups of absorption • Designed for overnight use • Fits inside most protective underwear • No waterproof backing allows liquid to pass through to maximize absorbency • Made in USA • Packaging may vary Great for extended wear situations where extra absorbency is needed. 3111D