From the archery opener in Carolina to desert aoudad in Texas, the First Lite M's Wick Boot Top Bottomis First Lite's next-to-skin base layer for high-output hunts in hot weather. The articulated fit and comfortable brushed, jacquard waistband leverage the structure and stretch of our Ultralight 150 Aerowool® fabric. This layer also features 125-gram Aerowool® mesh panels through the crotch to maximize ventilation during active hunts. The Men's Wick Boot Top is the new standard in hunting clothing for quick drying, odor-resistant, ultralight baselayers. Ultralight 150 Aerowool® construction combines the finest, 17.5 micron merino wool available with 37.5-activated nylon fibers to create a super-charged fabric with incredible performance benefits. Our Wick styles also integrate 125 gram Aerowool® mesh to targeted hot-zones, which also utilizes 17.5 micron merino and 37.5-activated nylon fibers. What you get is enhanced odor resistance, exponentially improved dry times, increased durability, moisture wicking, and a fabric that can cool you down when you're heating up and warm you up when it's cooling down. FEATURES: True to size: Purchase your normal size to wear over or under other layers Exclusive 37.5 Active Particle Technology Exhausts moisture and maintains core body temperature Traps odors (human signature) and releases them when laundered Mesh vent panels to maximize ventilation 3/4 length to fit just above boot top Boxer brief fit for comfort and support Jacquard waistband Fully functional fly Flatlock seams for next-to-skin comfort Machine wash, line dry Material: 150gsm Aerowool® -- 65% Merino / 33% 37.5 Nylon / 2% Spandex Cut: Athletic Actual Weight: 5oz Temperature Range: 45F - Above 80F