... machine washable merino wool knitted thermal glovesMicron: 17.5~20.5Weight: 150~320gsmFabric: rib, single jersey, interlock, terry, mesh, jacquard ... , polypropylene etc.Seam: flatlock, overlock etc100% Merino wool, machine washable, won't hold odors like synthetics, extremely soft, ... 100 CERTIFICATION, WRAP CERTIFICATION ETC. 100% superfine machine washable merino wool knitted thermal gloves