The Sofa Cup HolderBy Steadi Labs

—A base for the cushion

It doesn’t fit your arm. It doesn’t need to.

The tray, the clip-on and the weighted coaster all have a number you have to match — arm width, clamp range, cushion gap. That is why the last one is behind the closet door. This has no number to match, because it never touches the arm.

It is a 5.2-inch moulded base that stands on the cushion beside you — the one surface always within reach, and the one surface nothing else in this aisle will use. You have been holding that glass since the titles.

4.9 average · 121 reviews

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from $14.95 · free shipping on every order

Ships from Orange, California. 90 days to change your mind, used is fine.

A can standing in a terracotta Steadi on a sofa cushion in a lamp-lit living room.
On the cushion, at nine o’clock. Twelve colours in all.

—Read this before you buy another one

Every product in this aisle is fitted to the arm.

And the arm is upholstered, crowned and attached to the thing you are leaning on. These are the sellers’ own published requirements and their own customers’ published words.

IKEA RÖDEBY tray

$19.99

a flat arm, 4–12″

It bends to fit any arm, which is how it solves fit — and its own reviewers say that is why it fails: it “provides no sturdy base to put down a cup.”

CouchCoaster

$19.99

5.5″ of flat-ish arm

CouchCoaster’s weighted silicone sleeve. Cups to 3.5 inches, 2.75 with the insert. Its reviewers report it “will fall if it becomes uneven from body movement” — the arm deforms under your elbow.

Clip-on arm tray

Varies

a squared arm in range

A buying guide that tested nineteen models found only 42 per cent met their own stated width tolerance within a quarter of an inch. “Universal fit” is not.

Or the cushion

$14.95

no arm at all

A 5.2-inch base, 3.6 ounces, that the drink stands in. It does not care what shape your arm is, because it never touches it.

Sources: ikea.com (RÖDEBY listing and customer reviews) · vat19.com (CouchCoaster specifications) · thesofacovercrafter.com (nineteen-model tray comparison) · Amazon and Walmart customer reviews, quoted as published. Prices and specifications fetched 3 September 2026.

—Why the arm was never going to work

An arm is not a surface. It is a cushion you lean on.

  • There is no standard arm

    Clip-on tray makers quote arm widths anywhere from about 3.5 to 13.5 inches. A slim track arm and a fat rolled arm on otherwise identical seats can differ by roughly eight inches of total sofa width. Nothing can be fitted to all of that.

  • A rolled arm has no level plane anywhere

    Not a narrow one — none. That is what “rolled” means. Rigid trays are rated by width, and width is not the spec that decides it.

  • The arm moves when you do

    It is padded, and you are leaning on it. The best-known weighted coaster’s own reviewers describe it falling when the arm “becomes uneven from body movement.”

  • And the coffee table is a decision, not a surface

    Seat depths of 20 to 24 inches on a track-arm sofa, with the table set out in front of that. Once you are settled, using it means sitting forward. Which is why you are still holding the glass.

ikea.com · vat19.com · thestatedhome.com and ihome-studio.com arm-style guides · omhucph.com and tynerfurniture.com dimension guides · caseybarber.substack.com. Fetched 3 September 2026, quoted from the sources named.

A hand sliding an aluminium can down into the fins of a Steadi.
The whole installation. Nothing is fitted to anything.

—Does it actually work

It wobbles. Then it settles.

Somebody sits down beside it and the foam re-shapes under both of you. The base is 5.2 inches across, so the drink and the base move as one piece and come back level instead of heeling over.

Filmed on a couch cushion — which on this page is not a caveat. It is the surface the whole argument is about.

A full can standing in a white Steadi on a couch cushion, a living room behind it.
Real footage, one take, no cuts.

—How it holds

Width, and nothing else.

The base

5.2 inches across and fixed. It moves the edge the drink would have to tip over much further out, so the whole thing has to lean much further before it goes.

The fins

Six of them, holding the bottom inch. Cans and bottles slide on from the top; tumblers and glasses drop in. Drink and base then rock as one piece.

The foam

A wide foot spreads the weight across the cushion instead of pressing into it at a point. That is the difference between standing on foam and sinking into it.

A macro photograph of the flared base of a terracotta Steadi, showing the moulded STEADI mark.
The flare, close. That width is the entire mechanism.

See the packs — from $14.95

—The object

One piece of rubber. Nothing to fit.

There is no clamp range, no arm width, no cushion gap and no tolerance to check against your sofa. It is a moulded base. It goes on the cushion and the drink goes in it.

  • Base5.2″ — fixed
  • Height2.8″
  • Opening at rest1.64″
  • Weightabout 3.6 oz
  • Fins6, from 0.92″ up, flexing to 3.15″
  • MaterialShore 85A TPU
  • Arm width requiredNone
  • HardwareNone
  • CleaningRinse, wipe, or dishwasher
Several sizes of can standing in Steadis side by side, from a slim can to a tallboy.
Slim can to tallboy. Bases between two and three inches all seat.

—What seats and what does not

Bases between two and three inches. Measure the bottom, not the rim.

Conventional cup holders run about two to three inches across and were sized for containers up to 24 oz, which is why the forty-ounce tumbler spawned an entire adapter market. This takes a 40 oz Quencher at 3.1 inches, snug. A mug with a handle does not seat at all — the handle lands exactly where the fins grip.

Search by container

Every width below comes from a published specification, not from us. Where a spec is uncertain, the answer says so.

Or the width across the bottom

A width across the bottom of the cup, in inches.

Without a tape measure

A standard sticky note is three inches square. A cup standing on one with its base inside the paper will seat.

Anything that overhangs, or anything borderline — hello@steadilabs.com reaches a person, and the answer will be honest either way, including a no.

—Where they end up

The cushion beside you, and then everywhere else.

The seat cushion is where it earns the purchase. After that it turns out to be the ottoman, the arm when the arm happens to be flat, the nightstand, the desk and the folding table — because a base that does not need to be fitted to anything is not fitted to the sofa either.

Twelve colours, and the picker assigns one per unit, which is the fastest way to stop arguing about whose drink is whose.

—What the aisle costs

Both of the named products are $19.99, and both are fitted to the arm.

Prices and requirements were looked up on 3 September 2026, not estimated. Every figure is the seller’s own, and every quotation is a customer’s. The CouchCoaster figure is the US price at vat19.com; the maker’s own store is British and lists it in pounds.

The productPriceWhat it asks of the sofa
IKEA RÖDEBY armrest tray$19.99A flat armrest, 4 to 12 inches wide. It drapes over a curve to fit — and its own reviewers say that is why it “provides no sturdy base to put down a cup.”
CouchCoaster weighted armrest coaster$19.99at vat19.comAt least 5.5 inches of arm with gently sloping sides. Cups to 3.5 inches, 2.75 with the insert. Reviewers report it falling when the arm “becomes uneven from body movement.”
Clip-on bamboo arm trayVariesA squared arm inside the clamp range. In a nineteen-model comparison only 42 per cent met their own stated width tolerance within a quarter inch.
Between-cushion wedge holderVariesCushion foam as the anchor. One seller’s own listing concedes that designs which “simply rely on the cushion foam to secure drinks can cause minor spills.”
The Sofa Cup Holder$14.95 · four for $39.95, $9.99 eachNothing. It stands on the cushion, the ottoman, or the arm if your arm happens to be flat.

If your sofa has a wide flat track arm, buy the tray. It is $19.99, it is the best surface in the room, and this page is not going to pretend otherwise. The argument here is for the other sofas, and for the seat in the middle that never had an arm to begin with.

—Get one

How many seats, and what colour goes where.

Count the seats that get used on a normal Tuesday night. On a three-seat sofa that is usually two. Free shipping on all of them.

Checkout is handled by Steadi Labs — the company that makes The Sofa Cup Holder. Secure checkout at steadilabs.com. Free shipping on every order, and 90 days to change your mind, used is fine.

—From people who bought one

All four of these name a couch.

Verbatim, unedited, not filtered by rating. They are here because they describe the cushion — the surface this page claims — and not one of them was asked to.

★★★★★

Sits right next to me on the couch, and now my coffee doesn’t spill

Linda Bernard · July 2026

★★★★★

Amazing product! Great for the couch and with kids that love to just plop down like animals. With Steadi, drinks are nearly impossible to spill

Michael Miller · July 2026

★★★★★

Works great! If it saves you from cleaning your sofa or rug or washing anything it is worth it. Give it a try!

Marsha Bagwell · July 2026

★★★★★

I have a tendency to spill my drinks and have two cats. This is one of the best things I’ve ever impulse bought. It works. It actually works. It’s a heavy, wide enough base that it is actually stable. My “spot” in the living room is near a somewhat-cushioned fabric ottoman, which is where I usually put my drinks. It’s totally stable on this cushioned surface. It fits cans, bottlers, glasses. It doesn’t get bent out of shape. It’s exactly what I needed.

Dixie · August 2026

A slice of one product-wide corpus — reviews of the Steadi, not of this page. The full corpus is published live.

—The limits, in one place

What it does not do.

—If it turns out to be the wrong thing

Ninety days. Used is fine. Nothing goes back in a box.

Leave it on the couch for three months. If the answer is no, hello@steadilabs.com reaches a person and the money comes back — no form, no restocking fee, no questions about condition, and nothing to pack up or post.

  1. You order. Free shipping, every order, always.
  2. It leaves Orange, California within one business day.
  3. USPS, 2–5 days, tracked.

—Who makes it

Steadi Labs. One person, in Orange, California.

The steel injection mould open in the machine, the cavity that forms the base visible.
The mould, in the machine.
Scott Rodriguez at a workbench, holding a terracotta Steadi and looking at it, with shipping boxes behind him.
Scott, who makes them.

Scott Rodriguez made the first one after a full drink went over on a soft cushion with three kids under three in the house. A sofa cushion is the exact surface it was designed for, which is not true of most of the pages this company runs and is true of this one.

We make one thing and we make all of it here — the moulds, the material, the colour runs, everything within about three and a half miles of the shop.

  • Steadi Labs — veteran founded and veteran owned
  • Designed, injection moulded, picked, packed and shipped in Orange, California
  • Patent pending
  • 100% BPA free
  • 5.2 inches across the foot, about 3.6 ounces

— Scott, Steadi Labs

—Questions

Straight answers.

Will it really stand on a cushion?

Yes — that is the surface it was designed for. The base is 5.2 inches across and fixed, so it spreads across the foam instead of pressing into it at a point, and the drink and the base then move as one piece when the cushion re-shapes.

My arm is rolled. Is that why the tray didn’t work?

Almost certainly. Trays are rated by arm width, and rolled arms fail on flatness. A rolled arm can measure the same across as a flat one and still have no level plane anywhere on it.

What about the wedge that goes between the cushions?

It works where a cushion-to-arm gap exists and the foam is firm. The foam is doing the holding, though — one seller’s own listing concedes that designs relying on cushion foam “can cause minor spills.” This stands on top of the foam rather than being held by it.

Will it hold a 40 oz Stanley?

Yes. The Quencher H2.0 40 oz measures about 3.1 inches at the base, inside the range the fins flex to. Snug rather than drop-in — it seats with a push.

Will it mark the upholstery?

It marks nothing and lifts clean. There is no adhesive, no hardware and nothing between the cushions. If you want to be careful with a light fabric, the cleaning code is on the tag under the cushion: W, S, W-S or X.

Does it work on leather?

Yes, and leather is where the width matters most, because a slick surface gives a sliding drink nothing to catch on. It leaves no mark and lifts off.

Can it go in the dishwasher?

Yes. Shore 85A TPU, 100% BPA free. Rinse it, wipe it, or run it through the dishwasher.

How many do I need?

One per seat that gets used. Most households buy two or four. The four-pack works out at $9.99 each and colours are chosen per unit.

Why does this site only sell one thing?

Because it is one thing. It is a Steadi, made by Steadi Labs in Orange, California, and checkout finishes at steadilabs.com where the company lives.

—Still deciding

$14.95 for a piece of rubber.

It is. The two named products in the table are $19.99 apiece and both need an arm you may not have. Ninety days covers being wrong about it, used, with nothing to post back.

I have already bought one of these things and it failed.

Probably a fit failure rather than a quality one — a clamp range that did not match, or a curve that nothing rigid sits on. There is no fit to get wrong here. There is no measurement to take.

Won’t it look like a gadget?

It is a matte moulded base, 2.8 inches tall, in twelve colours including bone, oat, sage and charcoal, with no branding readable across a room. It reads as part of the drink, not part of the furniture.

We have a “no drinks on the couch” rule.

Plenty of households do, and it exists because wiping a hard floor is easier than getting juice out of foam. This does not repeal the rule. It is a base that resists tipping — whether that is enough to change the rule is your call, and ninety days is long enough to find out.

Put it down.

On the cushion beside you, where it has been within reach the whole time.

See the packs — from $14.95

Free shipping on every order · 90-day guarantee, used is fine · Made in Orange, California