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Use the Rhoback Performance Q-Zip size chart as a starting point, then distinguish its chest and waist ranges from measurements of an actual garment. The product page also lists Q-Zip length, which is a different kind of measurement. A table with several columns does not mean every number should be measured on the shirt in the same way.
If you need a precise comparison with a pullover you own, ask Rhoback or the seller for finished garment dimensions and the measurement endpoints. The published chart does not provide a guaranteed pit-to-pit width for every size.
Research-based US buying guide, checked September 13, 2026. We used the linked official information. We have not tested these products; the comparison and practical checks are editorial recommendations.
| Size | Chest range | Waist range | Q-Zip length listed |
|---|---|---|---|
| Medium | 39–41 | 32–34 | 28.5 |
| Large | 42–44 | 35–37 | 29 |
| X-Large | 45–47 | 38–41 | 30 |
Table of Contents
Start with the correct product’s chart
Rhoback publishes separate tables for polos and Q-Zips in its sizing guide. For example, the polo Medium chest range differs from the Q-Zip Medium range. Do not assume that owning a comfortable polo makes the matching pullover label a confirmed fit.
The Solid Performance Q-Zip page supplies the length entries used above. Keep the style with your notes because other Rhoback products, including different types of layer, may use another chart. A single screenshot without the product heading can lose that essential context.
Do not halve a body range to invent shirt width
A body-size range describes the wearer the size is intended to accommodate. A finished flat chest width describes the garment laid out using specified endpoints. Halving a chart range does not account for the room designed into the garment, so it should not become an exact pit-to-pit specification.
For a useful retailer inquiry, say which measurement you need: flat chest width, back length or sleeve measurement, and how your reference garment was measured. If the page does not define an endpoint clearly, ask for clarification. This is especially helpful when you are comparing a used listing with a current size chart.
Measure your reference layer consistently
Lay a clean, dry pullover flat without pulling it wider or longer. Smooth it gently and record the measurement method beside each number. Note whether the reference is already washed and whether it has a banded hem or another construction detail that affects the shape.
Keep your own body measurements in a separate line. That separation lets a seller understand whether you are asking for a size recommendation or trying to reproduce a particular garment fit. A precise number is useful only when both people mean the same measurement.
Try the Q-Zip over the shirt you will use
Put on your ordinary golf polo and assess the layer while standing, sitting and moving into address. Check chest comfort, sleeve reach and whether the hem lifts more than you prefer. Then try it beneath your normal outer layer if that combination is part of your golf routine.
If one area is wrong, describe that area rather than automatically moving a full size. More chest room may also mean more body or sleeve length. Our base-layer guide helps with the outfit underneath, while the clothing basics guide keeps the wider fitting practical.
Before ordering, confirm the exact model, selected size and return conditions. Save the successful style and actual fit notes afterward. Those observations will help with future purchases more reliably than a rule that all Rhoback garments should be bought in one label size.
US buying links
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Check the exact model, generation and seller. Results can include alternatives; a search link does not confirm availability. Use the official supplier links for specialist products and services.
Sources and method
Specifications and policies are the linked supplier’s statements at the check date. Listed options do not establish stock in every size or configuration. Confirm the exact product and current terms before buying.