Men's 2-Pack 5" Boxer Brief Underwear in a Cotton Blend. These 5" Basic Poly/Cotton Boxer Briefs combine the mobility of Rugged Flex with the comfort of a cotton/poly blend. Available in 2-packs, for twice the hardworking performance and support on the job. 135 GSM/4.0 oz, 60% Cotton, 40% Polyester Jersey. Rugged Flex(R) technology for ease of movement. Smooth flatlock seams for comfort. Concealed Y-Stitch waistband offers less chafing and smoother edges. Contoured front for comfort. Tagless label.