Thermos - Best Flask Thermos Coffee Carafe - Silver 50 Oz The technology about this thermos vacuum insulation is such that it locks in temperature and preserves cold and hot beverages for hours This double-walled thermal carafe is 18/8 stainless steel and will withstand the demands of daily use The finish on this thermal carafe is a brushed silver exterior finish The 50 ounce of this caracoffee fe ensures that the user has enough fluids for the day