Every question, answered.

That's the shape's whole job. A rounded, upholstered arm gives a narrow glass no footing; the wide flexible base spreads across the padding instead of balancing on it, and the fins keep the drink from rattling loose as the chair moves. Nudge it and it settles back.

Rocking is exactly the movement it's built to handle. The base flexes with the rail instead of riding along it, and the fins hold the glass by its bottom inch, so it resists the slow walk toward the edge that ordinary rocking causes on its own.

Check the bottom, not the rim. A base 2 to 3 inches across settles in — the 40 oz Stanley-style tumbler does. A handled teacup is the exception: the base is fine, but the handle sits where a fin needs to grip.

It does what a coaster does, and more. The glass sits inside the base instead of directly on the wood, so condensation collects on flexible material instead of the finish — and unlike a coaster, it resists the tip too, not just the ring.

No. Nothing clips to the armrest, screws into the porch rail, or clamps to the card table. It sits on top of whichever surface is in reach and moves with you in a second.

Reclining is the exact use case, not the exception. The whole chair changes shape when the footrest extends, but the base stays wherever you set it — armrest or lap — and settles the drink back level as the chair shifts under it.

Yes — it holds steady on hard, flat surfaces at least as well as on padded ones. Set it at the edge of the hand you're playing and the coffee stops competing with the cards for space.

Rinse it or run it through the dishwasher. It's one piece of flexible material with nothing to come apart or wear out.

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.

It's one piece of flexible material with no spring, hinge, or clamp mechanism to fatigue or loosen over time — nothing to work its way looser the way a clip-on cupholder's spring tension does after repeated use. The material is the same flexible base whether it's brand new or years in, so there's no seasonal re-tightening or replacement part to track down.

The base holds the container the same way regardless of what's inside it — the fins grip the bottom inch of the glass or cup, not the drink's temperature. A holiday cup of cocoa and a sweating glass of iced tea get the same grip; the only difference is that the iced tea's condensation lands on the base's material instead of the good end table underneath it.

It's built to resist the ordinary bumps of a room with kids moving through it — a hug, a dash past the chair, a hand reaching for the armrest — the same way it resists the drift a rocking chair causes on its own. It's not a substitute for keeping a hot drink out of a toddler's reach; that's still on you, same as with any cup on any table.

It's sized for exactly that kind of day — one object that moves between the chair, the porch, and the card table instead of a set of single-purpose holders for each spot. It ships free and comes in enough colors to match a porch setup or a card table without a second thought.

One moves with you. Since nothing clips, screws, or clamps to any of the five spots, picking it up off the recliner arm and setting it down on the porch rail or the card table takes the same second either way — there's no reattaching, no matching bracket, and no second one to buy unless you want a drink parked in more than one spot on the same evening.

The caddy is built for exactly one surface, so it does that job and stops there — it has no answer for the recliner arm, the porch rail, or the TV tray. This is the one piece that covers whichever of the five spots the drink actually lands on that evening, card table included, without a separate accessory that has to be clipped to the table's edge each time the game starts.

Yes — a hassock's padded top has the same problem as an armrest: nothing flat to set a glass on. The wide base handles it the same way, spreading across the padding instead of balancing a point on it, and settles in on a footstool exactly the way it does on the arm of the chair or the porch rail.

Hard, flat surfaces work at least as well as padded ones — the wide base and the fins gripping the glass do the same job whether the surface underneath is a metal porch table, a glass-top side table, or the wood end table by the lamp. Nothing clamps or screws in to get that grip, so there's nothing that could scratch a glass or a metal finish either.

Those cups run narrower than that floor. The same sourced database used to set this range lists a standard espresso cup as too narrow for its fins to close around and get a real grip — the same limit that rules out a demitasse. Under 2 inches, the base sits too loose no matter how far the fins flex to meet it.