Will your desk mug, bottle or tumbler fit?
Measure the base and check clearance. Brand, volume and the drink’s name do not establish compatibility.
Measure across the bottom
Steadi fits drink container bases 2–3.15 inches across, inclusive. Measure the base that actually enters the holder, not the top opening or widest upper section. Remove uncertainty by measuring the drinkware you own rather than relying on a product family name.
Mugs: check the handle as well
A low handle may meet the fins before the mug seats fully. Base diameter is necessary but not sufficient for a handled mug. Check the actual handle position and full seating; do not force the mug down to overcome interference.
Bottles: look at the base shape
A bottle with an in-range measurement may still have a shaped base that changes how it seats. Confirm full seating and stable support with the actual bottle. Steadi is not a bottle seal and does not establish that an open drink can be transported without spilling.
Tumblers: capacity is not a dimension
The exact 40 oz Stanley Quencher H2.0 is an owner-confirmed example. That does not establish compatibility for all Stanley models, all handled tumblers or all 40 oz containers. Added boots and other accessories can change the base diameter and seating.
Bring the measurement back to your desk
After checking the drink, allow the holder’s full 5.2-inch footprint on the desk and room for your hand. The holder is 2.8 inches high and weighs about 3.6 ounces. Hand wash only. If your setup remains uncertain, send the exact drinkware model and a clear base photo through Contact.