I like their idea of aluminum cups, but the boxes they come in are unfortunately made from plastic coated paperboard. (Not sure why, with their whole selling point being more environmentally friendly.)
Great at conduction, but with not a lot of thermal mass, meaning that actually your drink will usually just make whatever it’s touching (your hand, often) super cold or hot.
I like their idea of aluminum cups, but the boxes they come in are unfortunately made from plastic coated paperboard. (Not sure why, with their whole selling point being more environmentally friendly.)
Also aluminum is super great at conducting heat! which means your drink will rapidly move toward whatever temperature it is.
Yeah I have some and they 100% require a koozie/beverage sleeve.
Great at conduction, but with not a lot of thermal mass, meaning that actually your drink will usually just make whatever it’s touching (your hand, often) super cold or hot.
It’s a two way street. Your hand is reciprocally warming the drink.