Mug with double-wall vacuum insulation technology to maintain temperature ● Keeps cold drinks cold for 24 hours and hot drinks hot for 6 hours. ● Prevents condensation on the cup when filled with cold drinks. ● HydroFlask uses 18/8 pro-grade stainless steel, widely recognized for its strength and purity, in all of its bottle products! ● The material prevents odors and flavor transfer, so it's safe for strong-smelling coffee, etc. ● Great for camping and glamping. Brand new, unused. Set of 2