Pampers XXL diapers are designed for the biggest, heaviest babies. With their super-absorbent cores, they can keep up with your growing child for up to 12 hours of protection. The soft, stretchy sides and waistband help keep the diaper in place and prevent leaks. You can use Pampers XXL diapers on a newborn baby from birth to 16 pounds. They're also great for kids who are toilet training. With their larger size, they can be worn as underpants and can hold up to 4 cups of liquid.