Altera Conquer Light OTC Sock Black 12-14. This OTC sock has 12" upper above the heel with terry loop only on the sole. The Conquer crew has a reinforced heel and toe with arch support. Dedicated to those in the military search and rescue and forest service the Conquer can handle anything. The Conquer sock is excellent for everyday wear. On a microscopic level alpaca fleece has a smooth exterior surface which is why alpaca is as soft as silk. Alpaca features an unique hollow core which allows it to wick moisture away from your skin Alpaca fiber provides up to 30percent greater insulation that Merino wool in either hot or cold conditions. Total thermal regulation even when wet Alpaca fiber is processed with a biodegradable citrus based cleaner. Altera High Performance Fiber Technology is naturally anti-microbial and flame resistant. Altera enhances the antibacterial properties of the alpaca fiber with an exclusive Silver Infusion Technology enabling multiple odor-free wears of our alpaca garments without laundering. Specifications for Altera Conquer 12in OTC Light Weight Sock: Manufacturer: Altera Men's Clothing Size: Extra Large Gender: Male Age Group: Adults Color: Black Features of Altera Conquer 12in OTC Light Weight Sock: Moisture Wicking: Alpaca's hollow core fiber wicks moisture away from feet offering supreme comfort Thermal Regulation: Alpaca's superior hollow core fiber insulation is warm in cool weather and cool in warm weather helping to regulate body temperature Silver Infusion Technology: Alpaca blended with yarn infused with precious metals for naturally odor free wear and antimicrobial comfort Flame Resistant: Alpaca is a Class 1 flame resistant fiber for maximum confidence in extreme conditions. If you require a flame resistant sock this is your choice Package Contents: Altera Conquer 12in OTC Light Weight Sock Altera 5010701430: Conquer Light OTC Sock Black 12-14