The paper cup holders work wonders, especially during extreme weather days. Designed to fit around both 16 oz and 20 oz standard paper cups. A silicone ring keeps paper cup securely inside Beverage stays hot 3 times longer than in a plain paper cup. Cool to touch exterior with hot liquids inside. Refill with fresh paper cup - no need to wash. Fits most car cup holders. Hot 3 hours, Cold 6 hours As with all insulated beverage containers, we highly recommend pre-heating these units by filling them with hot water - or cold water, and leaving them sit for a minute or so before storing your beverage. This will greatly increase the amount of time your beverage will hold its temperature. Thermos TherMax™ vacuum insulation virtually eliminates temperature change by creating an airless vacuum space between two unbreakable stainless steel walls. The result is an insulation layer that performs better than almost all other insulation methods, excluding glass lined containers, which are for the most part, not suited for more rugged environments. Thermos TherMax™, Superior insulated containers that keep whats hot, hot, and whats cold, cold!
All of the double wall stainless steel lined thermos vacuumware you will find at BaldMountainCoffee.com, are top of the line units. We do not carry products that are insulated with foam. Although Thermos does manufacture other, less expensive lines of products that do not include their TherMax™ technology, we carry only only Nissan Thermos products that DO include TherMax™ technology, as we feel they are far superior to what else is offered.