pack includes 7 pairs of boxer-brief underwear elasticized waistband repeating logo fly front xs = 5-6 yrs (22 1/2 waist) s = 6-8 yrs (23-23 1/2 waist) m = 8-9 yrs (24 waist) l = 9-11 yrs (24-26 waist) xl = 11-12 yrs (27 -28 waist) . Best Holiday gift for Kids , perfect Boxers for Christmas!