North Face snow boots. Synthetic fiber types are common these days, but these have goose down as the inner lining. They're very warm; the down makes a difference. 27cm Thank you for looking! Please be sure to read the profile, photos, description, and listed items carefully. Basically, no returns or exchanges (NCNR). Shipping may be delayed due to work. #NorthFace #SnowBoots #WinterBoots #Boots #Down #Nuptse