Aerogel Fastener Neck Warmer Free Size Yellow Never used; selling to declutter For men and women Uses aerogel batting with excellent insulation ◎ Use accessories to stay warm smartly Just wrap it on! Easy to use with a zipper closure, always reliable! ●Product Features● ・Zipper closure allows for easy on and off without messing up your hairstyle or makeup! ・Can fully cover your mouth and adjust the height by opening the zipper ・Simple design, perfect for going out, commuting to work or school by bicycle, and outdoor sports! Materials Outer: 100% Nylon Batting: 100% Polyester Lining: 100% Polyester