Altera Conquer Light Crew Sock Black 12-14. 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 9in Crew Light Weight Sock: Manufacturer: Altera Men's Clothing Size: Extra Large Gender: Male Age Group: Adults Features of Altera Conquer 9in Crew 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 9in Crew Light Weight Sock Altera 5010501430: Conquer Light Crew Sock Black 12-14