Take it easy when you wear the Icebreaker Men's BodyFit 150-Ultralite Anatomica Relaxed Boxer With Fly. The merino wool breathes when you're backpacking or ski touring, and it's naturally antimicrobial, which helps when you're in a no-wash and no-room-for-clean-undies travel situation. An ultralight knit offers year-round versatility, thanks to merino wool's ability to naturally regulate temperature. Crafted with a touch of Lycra for an ideal fit and unrestricted mobility, this might just be the most comfortable underwear you'll ever grace your nether regions with.