The Dopper Insulated keeps your water ice cold up to 24 hours, and scorching hot up to 9 hours. But you on the other hand are always hot and cool, because with this bottle you are saving the planet.
The Dopper Glass Insulated (450 ml) keeps your water ice cold for up to 2 hours and scorching hot up to 1. Just long enough to hold you over during your morning commute!