You are bidding on an Authentic SUNDEK boys swim trunks Size : 4 Condition: New with tags Composition: 50 % Nylon - 50% Polyester Awesome SUNDEK mens bathing suit Measurements : around waist : 26" (66cm) Style n: J691BS/SURF SHORT Interior net External pockets MADE IN USA MORE STYLES IN STOCK, please ask or check my other listings. For an explanation of the size guide please use the link below as the sizes are not categorized by age. http://www.shopsundek.com/en/sizeguide_bimbo_sundek.htm?&KeepThis=true&TB_iframe=true&height=540&width=880