Every question, answered.

Hard, flat surfaces are the easy case, not the hard one — the wide base plants real contact on aluminum, concrete, or plastic instead of balancing on a slick rim of it, and it holds at least as well there as anywhere else. The fins grip the drink by its base, so a stomping row or a squeeze past on the riser doesn't walk it loose.

No — that's the point. It doesn't clamp to anything and doesn't depend on your seat having come with hardware. It sits on the plank, the riser, or the fold-down seat itself, holder or no holder.

Most armrest rings were sized for a standard fountain cup, so a souvenir cup or a 40 oz tumbler was never going to sit in one comfortably. Use the ring for what it holds and this for the drink that doesn't fit it.

Yes — the 40 oz Stanley fits. For anything else, measure the bottom, not the rim: a base 2 to 3 inches across settles in. Handled coffee mugs are the exception — the base fits, but the handle lands where a fin needs to grip.

That's the classic stadium spill — a drink at knee height in a forest of legs with no warning. This resists tipping and settles the drink back as the crowd surges past it. It won't survive a boot straight through the cup, but the ordinary press of a whole section coming to its feet is precisely the jostle it's built to hold through.

Yes — a rail is a hard, flat surface like any other, and a crowded one benefits most: the wide base and the fin grip keep a bumped cup from sliding off a narrow shared counter when a shoulder swings through.

Yes. It's a single flat piece of flexible material with no frame or hardware, so it lies flat in a clear bag or a pocket without claiming real space of its own.

Rinse it or run it through the dishwasher. It's one piece of flexible material with nothing to come apart, so concourse dust and dried soda both rinse off clean.

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.

Those seats solve seat comfort, not drink stability. The cup holder is a mesh sling added on as an afterthought, and one tested review found it held a standard water bottle and most 16 oz sodas — smaller than the souvenir cups and 40 oz tumblers a lot of fans bring now. It also dangles off the seat edge over the footboard gap. This holds a wider range of containers steady, right on the seat itself or the plank beside it.

Clamp-on holders need something to clamp to: a plank edge or a rail with exposed thickness. A closed-deck bench, a concrete riser, or a fixed seat with a solid armrest doesn't give the clamp jaw anything to close around, which is the gap the category's 'sturdy clamp, universal fit' marketing tends to gloss over. This doesn't need an edge — it sits flat on the plank, the riser, or the seat itself.

No — it's a base, not insulation. It holds whatever's set in it steady; a Stanley-style tumbler, a can, or a paper coffee cup does its own keeping-warm or keeping-cold. What it adds is somewhere for that tumbler or cup to stand upright on a plank or a footboard instead of riding on its side.

The floor is a 2-inch base and the ceiling is 3 inches; the flexible fins stretch to seat bases as wide as 3.15 inches for a snug fit. That ceiling covers the Stanley 40 oz H2.0 FlowState Quencher (a 3.1-inch base) and the Stanley 30 oz H2.0 FlowState Quencher (3.15 inches, the exact flex limit). On the small end, a standard 12 oz can — 2.6 inches across, industry-wide — sits comfortably inside the floor; a slim seltzer can, closer to 2.26 inches, sits nearer the floor of the range but still fits.

Yes — its base falls in the 2-to-3-inch range that settles in. What makes a souvenir cup risky isn't the base; it's the top. Tall, tapered, and lightweight, it gets top-heavy fast once it's full of ice, which is exactly why it's one of the easier tips in a section. A wide, gripping base is what a top-heavy cup like that needs most.

A kid's Gatorade-style squeeze bottle has a wide enough base to fit and settle in. A juice box doesn't — its footprint is too narrow for the base to grip. That's the honest answer either way: this widens what a section can hold steady, it doesn't stretch the floor of the range.

Enough for wherever drinks actually sit still. Most groups do fine with one per seat that regularly holds a drink, plus a spare for the row when a couple of people are sharing a footboard or a stretch of rail — cheaper than replacing a coat after the drink next to yours goes over.

It's one molded piece of flexible material, the same shape whether it's a bright August day game or a cold November night — no folding arm, hinge, or clamp spring to work loose the way portable-seat and clamp-on holders do over a season. If it doesn't hold up the way this page describes, the 30-day guarantee is there to fix it.

It solves a problem both already have without a name for it — most season-ticket holders have made peace with an armrest ring that's too small, and most youth-sports parents have set a coffee on a footboard more mornings than they'd like. It's small enough to hand over without needing a card to explain what it's for.