Every question, answered.

That's the terrain it's built for. The wide, low base spreads across slack fabric or uneven turf instead of tipping off it, and the fins keep the drink from rattling loose when someone shifts nearby. Bump it off level and it settles back.

Stemware is the classic picnic problem, and it's why the fins grip a container by its foot, not its bowl. Measure the foot, not the bowl — 2 to 3 inches across settles in.

Measure the base, not the rim. About 2 to 3 inches across fits, and the 40 oz Stanley does. Handled mugs don't — the handle sits right where a fin needs to grip.

It resists tipping on a slope the same way it does on flat ground — the low, wide base rocks with whatever it's set on and lets the drink settle back down. It isn't gravity itself; a hard kick down a steep grade is still a hard kick. But the everyday lean of a graded lawn is exactly what it's built to shrug off.

No. Nothing gets pushed into soil and nothing needs soft dirt to grip. It sits directly on top — the blanket, the grass, or the cooler lid — and picks up in a second when you pack out.

Yes — it holds at least as well on a hard, flat surface as it does on fabric or turf, which matters the moment the cooler lid becomes the de facto table.

It resists tipping and lets a bumped drink settle, which is most of how spills start on a blanket. It isn't a sealed lid, so pairing it with a lidded tumbler is still the safer move for anything sugary.

Rinse it clean, or put it in the dishwasher. It's one piece of flexible material with nothing to come apart, so grass stains and cooler drips wipe off in seconds.

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 90 days to change your mind.

As many as you have drinks going at once — there's no shared base or limit tying multiples together. Most groups bring one per person or one per drink type (wine, seltzer, kids' cups), and each stands on its own patch of blanket or grass without needing the others moved.

A soft juice box or pouch doesn't have a true base to grip, and the spill there usually isn't tipping anyway — it's a small hand squeezing the box until the straw fountains out, which no base fixes. A hard-sided kids' cup with a rounded base in the 2 to 3 inch range fits and holds the same way any adult cup does.

A standing bottle is heavier and taller than what this is built around — it runs close to 3 inches at the base, right at the edge of the fit range, but the height and weight above that point make it the kind of item most people are more comfortable keeping low in the cooler than balancing upright in grass. It earns its keep on the glass being poured from, which is where the tipping actually happens.

A quick rinse handles it. The fins are open and flexible, not tight channels, so a blade of grass or a bit of dirt from the lawn doesn't lodge in and stay. It's one piece of solid material with no seams or springs for debris to work into, so what goes in also comes back out.

It's one piece of solid, flexible material, not a fabric or a coated finish, so there's no woven surface for wine or grass to soak into the way there is on the blanket itself. A rinse or a wipe-down lifts what's on the surface, or put it in the dishwasher. On the lighter colors, wipe up a wine spill sooner rather than later the way you would with any light-colored dish.

It's molded solid plastic, not metal, so it doesn't get uncomfortably hot to the touch the way a metal spike or wine ring left in full sun can. Like anything left outside, a darker color will feel warmer than a lighter one on a hot afternoon, but that's a surface-warmth difference, not one that affects grip or fit.

It's one solid piece of injection-molded material with no separate parts, hinges, or springs to wear loose, so tossing it in the tote with the blanket and everything else doesn't stress anything that can break. It packs flat the same way each trip and comes back out ready, with nothing to re-level or reassemble.

It solves a specific thing anyone who's picnicked more than once already recognizes — the wine glass with nowhere to stand, the can that gets kicked over in the dark at a lawn show — which makes it an easy add to someone's picnic tote rather than something they'd have to go looking for themselves. It ships free, molded and packed in Orange, California, in colors built to sit on a blanket, not look like gear.