As avid tea and water drinker, I’ve always carried around two bottles to accommodate the different temperatures of the drinks — a reusable water bottle for cold water and a travel mug for hot tea. However, both traditionally have design flaws that kept me from getting attached to anyone in particular. Traditional water bottle tend to have condensation on the outside and lose the temperature of the water far too quickly. However, double tinned water bottles have grown in popularity and allow me to use it for both hot drinks and cold drinks reducing the number of bottles I use down to one and can maintain the temperature of the internal liquid for up to six hours.