About as good as it gets in a vacuum bottle, this compact Thermos bottle is made of stainless steel, insided and out, with an insulating vacuum layer between the inner and outer walls. The lid is made of BPW-free Eastman Tritan copolyester, so the whole thing is just about unbreakable, while remaining lightweight and compact. Twist-and-pour stopper, dishwasher safe, 16-oz. capacity, 9.9" tall.