Reusable Coffee Sleeve (fits tall through venti Starbucks hot cups, although it is a bit low on a venti, FYI) and Ice Cream Sleeve (which can also double as a noodle bowl holder, but it is NOT microwavable safe) It is meant to keep your hands from being cold (or hot) while eating your treat.
To repeat - IT IS NOT MICROWAVABLE SAFE.
To repeat - IT IS NOT MICROWAVABLE SAFE.