Brand New W/Tags KXV Alpine is a 3/4 length compression base layer. They feature our targeted knee compression and hip support to improve stability and balance on the ski hill. The built-in knee sleeves also provide relief to tired and achy knees and the anti-bacterial, fleece-lined thermal StabiLuxe™ base will keep you warm above the treeline. - Thermal StabiLuxe™ compression base: 88% Nylon / 12% Spandex - 1.5 mm perforated neoprene support layer around knees, hips & IT bands - Non-slip waistband with silicone beading