Every question, answered.

That's its native ground. Soft, uneven, moving surfaces are what the shape is for — the wide base spreads across the foam instead of sinking a point into it, and the fins keep hold of the drink while the seat moves underneath. Nudge it off level and it comes back.

Then you know why blotting was never the answer. This resists tipping — it holds the drink steady and settles it back when the cushion moves. It isn't a lid, so on solvent-only fabric you can stack the layers: drop a lidded tumbler into it and the couch has two lines of defense.

It doesn't have to — that's the point. Arm shapes are why clip-on trays are a fit lottery. This skips the arm entirely and sits on the seat cushion, the chaise, the ottoman, or the coffee table, with nothing to measure and no clamp range to check.

Yes — the 40 oz Stanley fits, and so does the 30 oz Yeti Rambler. The rule is the base, not the brand: 2 to 3 inches across settles in. Handled mugs are the exception — the handle lands where a fin needs to grip.

No. Nothing clamps to the arm, wedges into the crease, or straps to anything. It sits on top of whatever surface you give it, moves seat to seat with you, and nothing needs undoing when you're done.

Most houses with that rule wrote it after meeting the foam. A straw cup drops in and gets gripped by its bottom inch, which gives the cup one assigned spot instead of a wandering life on the cushions. It resists tipping rather than working miracles — but a held cup beats a loose one by a wide margin.

A moving seat is the job, not the exception. The base rides the cushion as it pitches and settles the drink back level. It resists tipping, not physics — four paws square on the cup still win — but the bounce from a landing two cushions away is exactly the kind of hit it's built to take.

Yes — the table is the easy job. The same wide footprint and fin grip that manage a moving cushion keep a bumped drink from skating off the wood, which earns its keep on game night.

Rinse it in the sink or wipe it down — one molded piece, no seams, nothing to trap a spill. Skip the dishwasher; heat is the one thing not recommended. Compared to what the couch demands, it's a vacation.

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.

One per person who regularly drinks on the couch covers most households, plus a spare for guests — it moves from the arm to the cushion to the chaise in a couple seconds, but it can't be in two spots at once on movie night. A three-seat sofa with two regulars and the occasional guest is a reasonable case for keeping two or three around in different colors.

Same shelf, different mechanism. The CouchCoaster is a roughly 1.2-pound weighted silicone sleeve that needs at least 5.5 inches of reasonably flat arm to sit on and tops out around a 3.5-inch cup — its own reviewers report it still tips once a padded arm dips under a leaning body, because the weight anchors the holder, not the surface it's sitting on. This skips the arm requirement entirely: it sits on the seat cushion, the chaise, or the table, holds a base from 2 to 3 inches (fins flex to about 3.15 for a snug fit), and settles the drink back level when the cushion itself moves — the exact motion that gets a weighted holder in trouble.

A wedge holder is gripped by the cushion foam alone, and foam is exactly what gives out — even the companies selling that style note in their own listings that a holder anchored only in cushion foam can cause spills, and that the middle of the seat is the least stable spot for one. This doesn't wedge into anything; the wide base rests on top of the cushion and spreads the load instead of asking foam to grip a narrow point.

It's one molded piece — no clamp spring, no strap buckle, no hinge to fatigue. The flex lives in the fins themselves, and there's nothing mechanical inside to work loose the way a clip-on tray's clamp does after repeated tightening.

No — it only contacts the outside of whatever's sitting in it, so it isn't insulating or wrapping the drink either way. A steaming cup and a sweating tumbler get the same grip on the base; whatever temperature control the cup itself has keeps doing its job.

Leather already adds its own slickness to an arm's tilt, and condensation sitting directly on bare leather is its own problem. Here the moisture lands on the base's footprint instead of the leather underneath it — the same way it keeps a ring off solvent-only microfiber. Wipe the base dry and the arm underneath never got wet.

It's a low-risk one — it doesn't clamp to anything, so it works regardless of what shape arm their sofa turns out to have, which matters given how much arm widths vary from sofa to sofa. It ships free and comes in colors that read as home decor rather than a gadget, which is most of what makes a practical gift feel like a real one.

Both sit inside the fit range, just at different points in it. A standard 12 oz aluminum can runs about 2.6 inches at the base; a slim seltzer can in the White Claw style is closer to 2.26 inches. Either settles in — the range holds from 2 to 3 inches, and a can at either width sits well inside it, not riding the edge.

No, and it's an honest limit, not a design oversight. An espresso cup's base runs under the 2-inch floor the fins are built around, so a cup that small sits loose rather than gripped — and many small cups add a handle on top of that, which is its own separate non-fit. It's built for the range people actually reach for on a couch: cans, tumblers, glasses, not espresso service.