Our classic, go-to boxer brief built with a super-soft, stretchy and highly durable merino wool blend, and outfitted with the support and comfort you need for both daily life and weekend adventures, the Anatomica Boxers w/ Fly are the underwear you've been searching for. With an exclusive Icebreaker fit that makes them the most comfortable pair in your underwear drawer, the Anatomica Boxers w/ Fly also feature our corespun fabric, merino wool fibers wrapped around a nylon core, for increased durability and strength while retaining next-to-skin softness. Flatlock seams eliminate chafing when you're on the move, and the contoured pouch with a functioning fly offers support and function. INSEAM: Large = 11.6cm / 4.5" FIT: Slim LAYER: Underwear BEST FOR: Outdoor & Hiking, Travel & Lifestyle, Snow Sports, Running & Fitness BENEFITS: Comfort, support, Odor Resistant, Lightweight, Breathable FEATURES: Updated with improved fit, contoured pouch with functioning fly, flatlock seams prevent chafing, corespun fabric for added durability FABRIC WEIGHT: 150 Ultralight FABRIC: 83% Merino wool, 12% Nylon, 5% LYCRA