First Lite Furnace Long John - Men's Terra Large. Using our Merino-X 350g EXP weight fabric the Furnace Long John provides lofted insulation and protection from the coldest temperatures. Featuring flatlock seams a brushed jacquard waistband and an articulated fit the Furnace Long John leverages the loft structure and stretch of our Merino-X fabric to provide the ideal layering piece over our other lightweight next-to-skin styles. This system is the new standard for stationary hunts or late-season stalks when staying warm is critical to success. Our Furnace EXP 350 Merino-X fabric incorporates a brushed (or fleeced) backside to our high-loft interlock knits to provide super-charged insulation without added weight. Adding this to the silent odor-free benefits of merino wool the Furnace merino is the hands-down choice for cold-weather hunts. Specifications for First Lite Furnace Long John - Men's: Manufacturer: First Lite Gender: Male Age Group: Adults Application: Hunting Fabric/Material: 95percent Merino Wool 5percent Spandex Insect Repellent: No Weight: 12 oz Features of First Lite Furnace Long John - Men's True to size: Purchase your normal size to wear over or under other layers 20.5 micron superfine merino wool Expedition weight fleeced Merino fabric for extreme cold Full length Jacquard waistband Fully functional fly Flatlock seams Package Contents: First Lite Furnace Long John - Men's First Lite 108402: Furnace Long John - Men's Terra Large