Smartwool Men's Merino Boxer Underwear - Every epic adventure starts with a solid foundation, and the last thing you want to overlook is the first layer you put on. Ultra-comfy, responsibly sourced Merino next to skin helps regulate body temperature, manages sweat, and resists odors, whether you're in Tennessee or Timbuktu. Jersey Merino fabric is ultra-soft next to skin, and a durable build is designed to last you for a long, long time; Slim fit base layer shows off a slimming silhouette while offering unrestricted movement throughout the upper thigh; Inseam: 4.75in; Flatlock seam construction is purposefully designed to minimize chafing; Fully functional fly allows for increased comfort; Style: SW016998545;