Kirkland Signature Men's Boxer Brief Pima Cotton 4 Pack Super soft Pima Cotton blend Rib fabric stretches for a comfortable fit Durable elastic waistband, tagless 96% pima cotton, 4% spandex S (in) = 28-30; M (in) = 32-34; L (in)= 36-38; XL (in)= 40-42; XXL (in) = 44-46; 3XL (in)= 48-50; 4XL (in)= 52-54