Will Steadi fit on your Adirondack chair arm?
Measure the usable arm surface before choosing a cup holder. Steadi needs support for its full 5.2-inch footprint.
Start with the flat area, not the widest edge
Measure the usable flat width and depth where the holder would rest. Rounded edges, slopes, gaps and an elbow reduce that space. Steadi is 5.2 inches across at its base. A 5.2-inch measurement is the minimum footprint check, not a guarantee that a chair arm is a good resting spot. Leave room to reach the drink.
A real chair example shows why measurement matters
POLYWOOD lists a 4.5-inch armrest width for its Classic Oversized Folding Adirondack Chair, model AD7030. That is narrower than Steadi’s 5.2-inch footprint. Use a separate side table for this pairing. This example does not describe every POLYWOOD or Adirondack chair; measure your exact model.
The chair has to stay still, too
A rocking, swiveling or shifting chair moves the drink along with it. Steadi does not attach to the arm or hold a cup level as the chair moves. A separate level table avoids relying on the moving arm as the resting surface.
A narrow arm calls for a different solution
A chair-specific cup holder may suit you if the chair maker confirms compatibility. A side table creates a resting surface for more than a drink. Steadi adds a wider base to compatible drinkware once you have a supported spot; it does not turn a narrow arm into a table.
Check the drink separately
Measure the container bottom: 2–3.15 inches across, inclusive. Confirm the container seats fully and that low handles or added boots do not interfere. A chair measurement and a drink measurement answer different questions.