Every question, answered.

Yes — a smooth desktop is where it earns its keep. It works at least as well on hard, flat surfaces as anywhere: the wide base and the fin grip stop a bumped drink from sliding, and it resists tipping instead of going over.

Honest answer: it resists tipping and settles back level through an elbow bump, a mouse-arm graze, or the shiver of a sit-stand frame. It isn't a sealed cup, so on the days the good board is out, pair it with a lidded shaker or bottle and you've got both layers.

Check the base, not the shoulder. A base of 2 to 3 inches across settles in — the 40 oz Stanley does, and so does a standard soda or energy can. Handled mugs don't; the handle sits where a fin needs to grip.

No. No screw clamp hunting for a specific edge thickness, no bracket, nothing that needs clearance underneath. It sits flat on the desktop, on the mat, or on the riser shelf, and moves in a second when the setup gets rearranged.

It holds fine on the cloth — the grip doesn't need a hard surface underneath to work. Most people still park it in the strip beside the mat instead of on it, simply because that's a spot the mouse's sweep never reaches at all.

No — an unsteady surface is closer to the use case than the exception. The base flexes with the shiver and brings the drink back level as the frame moves. It resists tipping, not physics itself, so a direct hard knock is still a direct hard knock.

It's one piece of matte flexible material — no clamp jaws, no adhesive, no hard plastic edge. It sits as gently on a painted laminate top as it does on the cloth mat.

Rinse it or run it through the dishwasher. It's a single piece of flexible material with nothing to take apart — unlike the keyboard.

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.

The clamp is usually the part that gives out first. The best-known clamp-on holder specs itself to desktops about half an inch to two and a half inches thick with open clearance underneath, so a lipped edge or a thick top defeats it before the cup ring is even in play — and that ring is one fixed size, around 3.6 inches, which is why a slim can ends up rattling inside it while a wide tumbler won't seat. This doesn't clamp to anything; it sits flat wherever there's a few open inches, and the fins do the gripping the ring was supposed to.

That bundled ring, standard on a lot of budget gaming desks, is one fixed diameter mounted below desk height, off to the side. It was sized for a standard can and nothing bigger, so a G Fuel shaker or a 40 oz tumbler doesn't come close to fitting it. This sits up on the desktop itself, in the natural reach line, and its base and fins handle anything from a slim can to a tumbler.

Usually, yes. A full-desk mat runs about 35 by 16 inches, which covers most of a typical 24-to-30-inch desk depth, but it rarely reaches every edge — the strip beside the mat or in front of a monitor stand is usually a few inches wide, and that's all the base needs. It's a compact single piece, not a bracket that needs its own dedicated slot.

Yes — it sits flat on any hard surface, the shelf included, the same way it sits on the desktop. Worth knowing: those shelves are usually narrow enough that a tall can already overhangs the shelf's own edge before anything tips it, so the open desktop, clear of the shelf, is usually the steadier spot for a full-height can or tumbler.

It's one piece of molded material — no clamp hinge, spring, or fabric flap to fatigue or work loose over time. The flex lives in the fins themselves, not in a mechanism, so there's nothing that loosens the way a screw clamp or a folding ring does with repeated use.

No. It only ever touches the outside of the can or cup, never what's inside it, so a hot cup of coffee during a work-from-desk morning and a cold, sweating can late in a session both just rest against the same base. The condensation ring a cold can would otherwise leave on bare laminate or the deskmat ends up on the base instead, and that rinses off.

It's a natural pairing — the moment someone's most protective of a new board is usually the same moment an energy drink sitting six inches away starts to look like a bad idea. It arrives ready to use with nothing to install, and comes in colors muted enough to sit next to a keyboard someone actually cares about.

Both, and they seat differently. A can or bottle slides in from the top; a shaker cup or tumbler drops down through the fins and gets gripped by its bottom inch instead. A 16 oz G Fuel shaker and a 24 oz Waifu Cup both land inside the base's fit range.