MEDIUM
rise 17", waist 13-20" and thigh 7-11"
fits approx. 10-20 pounds
LARGE
rise 18 3/4", waist 13-20" and thigh 8-13"
fits approx. 20-30 pounds
SMALL/NEWBORN
fits up to approx 15 pounds or more
Please note that diapers made with knit fabrics (velour, sherpa, microfleece, and other knit cottons) run larger than diapers made with woven fabrics on the outside because woven fabrics don't stretch. A lot of people find that their knit mediums last until potty training! Also, notice that the difference between the large and medium is in the rise and leg openings. The waist measurement for a large and medium are the same.

