Sugoi Zap Leg Warmers An illuminating experience The Sugoi Zap Leg Warmers combine the essential warmth of high-quality leg warmers, with advanced visibility technology for rides that carry on through the shortest days of the year, creating high-performance warmers to improve your rides through the colder months. The Zap Leg Warmers use Sugoi's Mid Zero fabric, with a supportive, high-stretch design that stays in place over the longest days on the bike, while the insulated panel construction keeps the warmth in. Ankle zippers on each warmer pair with the stretch design to make getting the warmers on and off easier than ever. But the most striking feature of these warmers is the Zap Tech visibility, a series of micro-glass lenses that-when viewed with direct light-light up like the Aurora Borealis while being almost invisible during the day. The Zap Leg Warmers keep you visible, warm, and comfortable through the least desirable riding conditions. Features Mid Zero fabric with a high-stretch design in a paneled construction for insulation that moves with you Zap Techuses highly reflective micro-glass lenses to create impressive visibility at night, while being nearly invisible during the day Zippered anklesfor easy on-and-off Sizing Size Small Medium Large XLThigh Diameter (IN)21 - 22. 5"22. 5 - 24"24 - 25. 5"25. 5 - 27"Thigh Diameter (CM)53. 5 - 57. 5cm57. 5 - 61cm61 - 65cm65 - 69cm | Sugoi | Zap Leg Warmers Men's | Size Small In Black