ESBIT Stainless Steel Vacuum Flask with Double-Wall Insulation and Double-Wall Drinking Mug Lid Robust vacuum flask with double-walled construction of high-quality BPA-Free 18/8 stainless steel Reliable vacuum insulation keeps beverages hot or cold for 24 hours Each flask includes 1 double-walled, stainless steel lid/drinking cup plus 1 plastic drinking cup Easy to use screw plug with pouring function Dimensions: 11.6 inches x 3.5 inches x 3.5 inches; Weight: 20.8 ounces