Every question, answered.

That's the surface it's built for. Wide, flat surfaces are where the flexible base and the fin grip do their best work — at least as well as on anything softer. It sits flat on the desk or the deskmat, off to the side of the keyboard, and resists tipping when a knock or a keystroke shakes the desktop.

No — the base sits on top of the deskmat and grips it instead of sliding across it. Nothing changes about the mat; what changes is whether the drink goes over in the first place. It resists tipping and settles back level when an elbow catches it.

Measure the base, not the rim. A base of 2 to 3 inches across settles in — the 40 oz Stanley-style tumbler does, tapered base and all. Handled mugs don't; the handle sits exactly where a fin needs to grip.

Movement is what it's built for. The base flexes with the shudder and brings the drink back level between keystrokes. It resists tipping — that's not the same as being unbreakable, so a real shove off the desk is still a real shove — but the ordinary shake of a raised frame is exactly what it shrugs off.

No. Nothing clamps, and there's no minimum or maximum desktop thickness to check first. It sits flat on top of whatever the desk actually is — deskmat, laminate, standing or sitting height — and clears the surface in a second when the gear needs the room.

Cloth is fine. Unlike a suction-base cup, which needs smooth, bare material to hold its grip, this one doesn't rely on suction at all — it sits and grips through its own weight and shape, deskmat included.

The base catches the ring instead of letting it run. A cold can or tumbler sweats onto the base sitting under it, not straight onto the deskmat, so the trail toward the keys doesn't get started.

Rinse it or run it through the dishwasher — sticky energy-drink or coffee residue included. It's one piece of flexible material with nothing to come apart.

It's called the Steadi, molded in small runs in Orange, California by Steadi Labs — veteran-founded and patent pending. Every order ships free from steadilabs.com, with 30 days to change your mind.

A clamp only works if the desk's edge cooperates. Most listed ranges top out around 2 to 2.5 inches of desktop thickness, and the clamp fails outright on a desk with a lip, a curved edge, a crossbar, or an under-mounted keyboard tray. The ring is also sized for a standard can, so 40 oz tumbler owners commonly resort to 3D-printing their own bracket — and the cup still usually ends up hanging off the desk edge, right in elbow range. This doesn't touch the edge at all. It sits flat on the desktop or the deskmat, wherever the drink already lives, so there's no thickness, lip, or crossbar to check first.

A suction seal only lasts as long as the pad does — reviewers report it losing its grip after a few months of daily use — and it needs a smooth, bare desktop to hold in the first place; set it on the cloth deskmat most edit bays are built around and it does nothing. It also only protects the one cup it's built into. This grips the outside of whatever container is set into it instead of sealing to the desk, so it works the same on cloth or laminate, and a can and a tumbler sitting side by side each get their own hold.

No. The fins grip the outside of the container by its bottom inch — they never touch what's inside — so a cup straight off the coffee maker and a can pulled from the fridge get the same hold either way.

It's one piece of molded flexible material with nothing mechanical to fail — no spring tension like a clamp's to loosen, and no suction seal like a 'won't-tip' cup's to dry out. Sticky energy-drink or coffee residue rinses off or comes out in the dishwasher the same way on day 500 as it does on day one.

Yes. Each base holds one container, and because nothing clamps to an edge, there's no single mounting point to compete for. Set a second one down anywhere there's room on the desk or deskmat — no extra hardware, no second edge to find.

Yes. A 16 oz energy drink can and a standard 12 oz can both run about 2.6 inches across the base, well inside the range. The slimmer cans run narrower — a 12 oz sleek can like Celsius or Alani Nu measures about 2.25 inches, and Red Bull's 8.4 oz slim can measures about 2.08 inches, right near the floor of what settles in. An espresso cup, well under 2 inches, is the one that sits too loose.

It solves a problem almost every desk with a monitor, a keyboard, and a long session has quietly worked around — no batteries, no setup, and no clamp to match to someone else's specific desk. It ships free, molded in small runs in Orange, California, with 30 days for them to decide it earns a spot next to the keyboard.

Yes. Nothing clamps or mounts to a specific desk, so there's no installation to redo at each location. Move it in a bag or a drawer the way you'd carry a mouse, and it sits flat on whatever desk is there — deskmat or bare laminate, sitting or standing height, home office or rented suite.