Every question, answered.

That's exactly what it's built for. The wide base spreads across the doghouse or the dash instead of standing on one point, and the fins keep the drink from walking as the vibration runs through it. A jake-brake pull can nudge it, and it settles back instead of going over.

Measure the bottom, not the rim. A base of 2 to 3 inches across settles in — the 40 oz Stanley does. The Philmore truck-stop mug doesn't; the handle sits right where a fin needs to grip.

That's the everyday case it's built around. The base flexes and resettles the drink when the truck decelerates hard — it resists tipping, not a dead-stop collision, but the pulses of a jake brake on a downhill grade are exactly what it's built to shrug off.

No. Nothing hooks to the window, clips to the grab bar, or screws into the dash. It sits on top of whatever surface is closest — the doghouse, the dash, the console — and moves with you.

Yes, and that's really the point. It doesn't need a factory holder to sit in — it works on the console, the dash, or the seat itself, which is exactly what a passenger-side Cascadia with no built-in holder needs.

Yes — soft, uneven surfaces are what it's built around. It holds steady on the bunk mattress or the fridge top, settling back through the idle hum and a roll-over instead of tipping into the bedding.

Honestly, the oversized ones run wider than the fit range — a classic Stanley vacuum bottle and a full-size Bubba Keg both sit outside the roughly 2-to-3-inch base this is built around. The 40 oz tumbler and the truck-stop refill cup are the sweet spot.

Rinse it or run it through the dishwasher back at the yard. It's one piece of flexible material with nothing to trap coffee grounds or come apart.

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 send it back if it doesn't earn a spot in your cab.

It's one piece of molded flexible material with no seams, hinges, or moving parts to work loose — the same vibration it's built to counteract on the doghouse or dash doesn't have a joint to wear out. It's designed to live where the heat actually is: on a sun-baked dash and over a warm engine cover, day after day of an OTR run.

It's solid, non-porous flexible material with no fabric liner or seam to trap coffee residue or soak up odor the way a cloth cup-holder insert can. A rinse, or a run through the dishwasher back at the yard, brings it back to how it started.

Most team setups end up with two: one that stays on the dash or doghouse for whoever's driving, and a second in the sleeper for the driver on their 10-hour break. It's not required — one moves with you between the seat and the bunk just fine — but two means neither of you is stealing the other's spot.

A bump from a dog moving through the cab is the same category of nudge as a pothole or a jake-brake pulse — the base flexes with it and settles back level instead of tipping. It's built around exactly that kind of unpredictable jolt, not just the road's.

It solves a problem almost every OTR driver has already lived — the coffee that walks off the doghouse, the water bottle that goes over in the sleeper — without needing to know their truck's make or model first. It sits on top of whatever surface is closest, so it doesn't need to match a specific cab.

An expander solves the diameter problem and stops there — it still sits inside the factory holder's same bad location, now with a taller, heavier cup swaying above it on a longer lever arm. This doesn't depend on the factory holder at all: it sits on the dash, the doghouse, the console, or the bunk, spreads its own wide base across whatever's underneath, and grips the container's bottom inch directly.

Yes. A standard 12 oz can and a 16 oz energy-drink tallboy — Monster, Red Bull, and most of the rest — share the same industry-standard 2.60-inch base, comfortably inside the 2-to-3-inch range this is built around.

It does, at 3.15 inches — and that's the exact edge of what the fins flex to accept. It seats snugly rather than dropping in loose, but it fits. Past 3.15 inches, the same base can't close around it.

Alongside it. The factory holder is usually already doing another job — holding a phone, loose change, an inverter — which is exactly why the drink ends up on the dash or doghouse in the first place. This gives the drink its own spot instead of fighting for the one that's already spoken for.