How it works
How a wide, low base holds your drink on a cushion.
A coaster works on a table because a table is hard and flat. A cushion is neither. This is the shape that fixes that — and why your drink settles back level instead of leaning over when someone drops onto the couch beside you.
Jump to the three parts ↓Why a cushion tips a normal cup
Set a cup straight on a couch and it sinks. The narrow base pushes into the foam, the cushion dimples around it, and the whole thing leans toward whichever side gives first. The softer the couch, the worse it gets — and the moment anyone else sits down, the surface moves and the cup goes with it.
It isn't that you're careless. A flat-bottomed cup is built for a flat, hard surface, and a couch cushion is the opposite of that. The fix isn't a steadier hand. It's a different shape underneath the drink.
The mechanism
Three parts,
no moving parts.
Instead of one narrow point sinking into the foam, a wide, low base lies across the surface and distributes the weight over a much larger area. The cushion can't dimple around a single spot, so there's no side for the drink to lean toward.
Flexible fins rise from the base and hold your cup, can, or tumbler from the sides. They flex to the width of the base — cans and bottles slide on, cups and tumblers drop in from the top — so the drink doesn't rattle around or slip through.
Push it off level and the low, wide footprint takes the movement instead of passing it up to the drink. It rocks, then it rights itself. That return-to-level is the whole point — it resists tipping by moving with the couch, not against it.
The part people don't expect
It wobbles.
Then it settles.
A rigid holder fights the cushion — and rigid is exactly what tips when the surface underneath it shifts. This one doesn't fight. When the couch moves, the base spreads the load low and wide, and the drink rocks and rights itself.
The clip near the top of the homepage is the demo we do in person at shows: a person drops onto the seat beside a full tumbler, it wobbles, and it settles, filmed on a regular couch cushion.
One piece, nothing to it
It's a single piece of flexible material — nothing to assemble, nothing to charge, nothing that comes apart. Rinse it under the tap or wipe it down; skip the dishwasher and the microwave, since machine heat is the one thing we don’t recommend — a hot drink in its own cup is normal use. Because it just sits on top of the cushion, there's nothing to install and nothing to undo when you move it to the other end of the couch, the bed, or a chair on the patio.
It resists tipping, settles back to level, and holds steady on a soft seat — low and wide, it rocks with the cushion and rights itself instead of fighting it.
Where the shape works
Anywhere soft or slightly uneven. Couch cushions are what it's built for, but the same idea holds on a made bed, a thick rug, a camp chair, or a back seat. If a coaster would slide or sink, this is the shape that holds — as long as your drink's base measures 2 to 3 inches across, with the fins flexing to 3.15. Check whether your cup fits →
Now the easy part.
Pick a pack, give each one a color, and give everyone on the couch their own. Free shipping, always.
Get yours — from $14.95Checkout is on steadilabs.com — Steadi Labs is the company that makes it.