Shock Doctor Core Supporter Jockstrap w/Soft Cup, Men's & Boy's Constructed with microfoam soft cup for increased protection Supportive 4-way stretch mesh for enhanced breathability Wraparound supporter for exceptional comfort Cup retention straps and comfort waistband for customized fit Size(Waist circumference)= Boys LG: 26-28"; Boys XL: 28-30"; Adult SM: 30-32"; Adult MD: 32-34"; Adult LG: 34-36"; Adult XL: 36-39"; Adult 2XL: 39-43"