Coffee sleeve, travel mug or resting base?
Choose for temperature, closure or support.
Sleeves
A sleeve addresses how the cup is held and may change the outside dimensions. It is not proof of Steadi fit.
Travel mugs
A suitable lid can address liquid escape. Follow that mug’s instructions; Steadi itself does not close an opening.
Steadi
The holder widens a compatible cup’s resting base. A hot drink in its own compatible cup is normal use; do not microwave the holder.