A wide flexible base that sits on the sand beside your chair and holds the can, the bottle, or the big tumbler steady — through the settling, the sprinting kids, and the onshore breeze that fills in every clear afternoon.
See it at steadilabs.com →Ships free · 30 days on the sand to change your mind · Molded in small runs in Orange, California
Will it fit where the armrest holder won't? A sticky note answers it — the test is below ↓
Or build your set right here ↓

Where things stand
The wagon holds the chairs, the umbrella, the cooler, the towels — the whole camp in one haul. The low chair parks you about nine inches off the sand, and from down there every drink is hunting for somewhere to stand.
The classic move: screw the can down into the dry sand and hope. The socket keeps re-shaping under it, so it's leaning within minutes — sweating a crust of grit onto its own sidewall while sun-heated sand warms it from the bottom up.
The mesh sling stretches out and quits gripping, the molded ring is too shallow to survive a shift of your weight, and the 40 oz tumbler was too big for it on day one. Whenever one chair leg sinks, the holder tilts right along with it.
The one flat, rigid surface in fifty feet, so every drink in camp migrates to it — a lid that's slick with condensation, swept by gusts, and opened every few minutes by someone who needs every drink on it moved first.
Thin fabric riding on loose sand. Every knee-down and footstep transmits straight through to whatever's standing on it, and an unweighted corner flips in the breeze — sometimes with a drink aboard.
Nothing here ruins the day by itself. It's a running tally instead — the twist, the re-park, the leaning check, the gritty sip — ticking along under the afternoon you hauled all this gear down to enjoy.
The moments
The chairs are down, the umbrella screw needs both hands, so the first cold can gets twisted into the sand to wait. By the time the canopy opens, it's leaning hard with a crust of grit dried onto the side it was sweating from.
Hat over your eyes, book on your chest, drink somewhere down past your hip. Every sip means sitting all the way up, leaning, and feeling around in the sand — so the sips stop, and the ice melts by itself.
One cuts through camp chasing a ball or a wave, one heel-spray of dry sand across the towels — and the open can catches it. Everyone on this beach has flinched through that next swallow.
The sea breeze swings onshore and stiffens, the way it does every clear afternoon. The half-empty slim can goes over on the first real gust, and suddenly sandals and sunscreen bottles are pinning down everything light in camp.
Somebody wants a refill, and the drinks parked on the lid get picked up, held in the air, and re-parked one-handed. By the third round, someone just sets theirs in the sand and accepts what's coming.
What's in it
Loose sand defeats drinks by re-settling under them — that's why the twisted-in can is leaning within minutes. The wide flexible base spreads across the grains instead of drilling into them, and when the sand shifts, it settles back level with the drink still gripped.
The slim seltzer can, the sweating water bottle, the 40 oz tumbler no chair holder accepts — cans and bottles slide in, cups and tumblers drop through the fins and get held by the bottom inch.
No stake to drive and tamp, no clamp matched to your chair's tubing, no table legs sinking at four different rates. One piece of flexible molded material that packs flat in the wagon, lands wherever your hand falls from the chair, and comes along when the shade moves.
The paper test
A square sticky note: 3 inches, exactly — the same ceiling the fit test uses, no ruler required on the sand.
The classic square sticky note is exactly 3 inches on a side. That's a fact about sticky notes — and it happens to be precisely the ceiling of what fits.
Test the one that actually makes the trip — the big tumbler, the seltzer can, the kid's cup. Look at the base, not the rim: beach tumblers taper and fountain cups flare, and only the bottom tells the truth.
Base inside the lines? It fits. Hanging over the edges? Too wide. A little dot adrift in the middle — under 2 inches? Too narrow.
Thirty seconds the night before, while the cooler's still in the garage — and nobody finds out at the beach.
What fits
One rule sorts the whole cooler: a container base 2 to 3 inches across settles in. Here's how the usual beach-day lineup shakes out.
The floor is as real as the ceiling — under 2 inches, a base sits too loose in the fins. The handled mug is the honest no: its base is fine, but the handle lands exactly where a fin needs to grip. And the koozie is a case-by-case — foam widens a can's footprint, so run the sticky-note test with it on.
The full fit database — Stanley, Red Bull, Yeti, and 30 more, with sourced base measurements →
Plain mechanics
Loose sand displaces under point loads — narrow bases drill in and lean. The wide flexible base spreads the drink's weight across the surface of the sand instead of down into it.
Flexible fins grip the container from the sides by its bottom inch — can, bottle, or tumbler — so a gust or a bump doesn't rattle it loose.
The sand re-packs, a chair leg sinks, a kid thuds past — the base flexes with the ground and brings the drink back to level.
Its home ground
The drink problem out here isn't clumsiness — it's that every surface in camp either is sand or is standing on it, and sand never stops moving.
Loose grains that displace under any weight and keep re-settling afterward, on a subtle slope that runs toward the water — and in full sun the surface gets far hotter than the air, as anyone who's crossed it barefoot knows. A narrow can drills a socket that won't stop re-shaping; a wide flexible base spreads over the grains instead.
Firm enough to walk on, which is the trap: it's visibly tilted toward the water, and it belongs to the tide. Anything parked there during a shoreline hang is waiting to be reached by the next push of the water.
Fabric floating on loose sand, with no rigid layer anywhere in the stack. It transmits every knee and heel straight through to whatever's standing on it, and the wind works its corners loose all afternoon.
Flat, rigid, and doomed by its own virtues: every drink migrates to it, condensation films the plastic so bottles skate, gusts sweep the light cans — and it opens every few minutes, evicting everything each time.
Versus what you do now
A screw-in stake whose stability depends entirely on the planting: the usage guidance says to tamp wetter sand and nest it against a chair leg — which concedes what it does in dry fluff. It parks the drink at ankle height, still a reach from a recline, a snug cup can pull the whole stake out with it, and cheap molded versions have drawn sun-warp complaints.
The holders are the afterthought on a chair engineered around lying down. The recurring reports: mesh stretches out and quits gripping, shallow rings spill when the sitter shifts or stands, and 30 and 40 oz tumblers don't fit at all. On sand there's a failure no spec sheet mentions — the moment a leg sinks, the holder leans with the chair.
Fit depends on your chair's tubing, cheaper clamps are reported to loosen over time, and add-on mounts can let go in use or in transit. A mount that rotates under a full drink hands it straight to your lap.
Four skinny legs, four different sink rates: the top ends up tilted and everything on it slides to the low corner. It also claims the space between the chairs, and it's one more bulky thing to haul on the walk-down.
Build your set
Ask first
That's its home ground. Soft, uneven, shifting surfaces are what the shape is for: the wide flexible footprint spreads over the loose grains instead of drilling a socket, the fins hold the drink by its bottom inch, and when the sand re-settles underneath, the base settles with it and brings the drink back level.
The sea breeze mostly beats tall, light, half-empty containers standing on their own — the slim can is its favorite victim. Gripped low in a wide base, that same can resists tipping and holds steady through the gusts. It's not a force field — a direct hit from a stray frisbee is its own event — but wind pushing on a drink is exactly the load it's built for.
That's the one this is sized for. Judge the bottom, not the rim: a base 2 to 3 inches across settles in, and the 40 oz Stanley does. Handled mugs are the exception — the handle lands where a fin needs to grip.
Case by case. Foam widens the can's footprint and koozies vary, so run the sticky-note fit test with the koozie on — base inside the 3-inch square fits. A bare 12 oz can fits.
Sand rinses right out. It's one piece of flexible molded material — no mesh to trap grit, no seams, nothing to come apart. Shake it out at the car, rinse it at the beach shower, or run it through the dishwasher at home. Sand and a soaking don't hurt it.
No — nothing clamps to tubing, nothing stakes into the beach. It sits on the sand wherever your hand naturally falls from the chair, the spot the ankle-height spike and the armrest ring both miss. On the walk-down it packs flat in the wagon or the chair's backpack pouch.
Yes — it works at least as well on hard, flat surfaces. The wide footprint and the grip keep a bottle from skating on the condensation film, and a gust that would sweep a light can off the lid meets a drink held low and steady instead.
Straw cups and small bottles settle in as long as the base lands in the about-2-to-3-inch range — the sticky-note test works on their cups too. No cup holder can save the juice pouch.
It's called the Steadi, molded in small runs in Orange, California by Steadi Labs — veteran-founded and patent pending. Orders ship free from steadilabs.com, and you get 30 days to change your mind.
Who makes it
The maker is Steadi Labs, a small veteran-founded company in Orange, California. It's injection molded in small runs, and nothing about it travels far — the mold, the material, and the color runs all sit within about three and a half miles of the shop, packed tighter than the wagon on the walk-down. The people who make it read hello@steadilabs.com themselves, usually before the cooler's even loaded.
Take it to the beach for a month. If it doesn't do what this page says — on your sand, with your cups — email hello@steadilabs.com and it gets made right. No forms, no fight.
Veteran-founded · Patent pending · Made in Orange, California
The drink stands level in the soft sand, right where your hand falls from the chair — through the recline, the cooler runs, and the two o'clock breeze — and the grit stays on the beach where it belongs.
Get yours before the next beach day — steadilabs.com →Checkout is on steadilabs.com — Steadi Labs is the company that makes it.