Written and maintained by CASRAI Editorial Board
Last updated
Short answer: there is no universal gown size. No regulator page or maker chart checked for this guide sets standard dimensions for “L” or “XL” isolation or surgical gowns, so each maker publishes its own chart, and the same letter can mean different measurements from one maker to the next. Use the chart for the exact product you are looking at, and confirm against that product’s labelling.
General product information only, not medical advice. It does not replace the maker’s instructions for use or your facility’s policies.
Gown size chart: two manufacturers side by side
The tables copy two published manufacturer charts exactly, then add a conversion (1 in = 2.54 cm, rounded). They are examples of how makers publish sizes, not a standard to size by. Source details are listed at the end of this page.
ADG Sentinel Max Level 2 isolation gown (maker chart, inches)
| Size label | Part number | Length | Sleeve length | Chest |
|---|---|---|---|---|
| Large | ABDL2-99L-US | 47 in (119 cm) | 23 in (58 cm) | 27 in (69 cm) |
| X-Large | ABDL2-99XL-US | 48 in (122 cm) | 23 in (58 cm) | 30 in (76 cm) |
CITEC surgical gown (maker chart, centimetres)
| Size label | Length x width of gown | Chest | Sleeve length |
|---|---|---|---|
| S | 120 x 140 cm | 65 cm (25.6 in) | 55 cm (21.7 in) |
| M | 120 x 150 cm | 70 cm (27.6 in) | 55 cm (21.7 in) |
| L | 130 x 158 cm | 75 cm (29.5 in) | 60 cm (23.6 in) |
| XL | 140 x 165 cm | 80 cm (31.5 in) | 65 cm (25.6 in) |
| 2XL | 150 x 175 cm | 85 cm (33.5 in) | 65 cm (25.6 in) |
CITEC lists a deviation of plus or minus 3 cm on every measure.
Check your product’s labelling. Use the size chart, part number and instructions for use that come with the specific gown. The tables above do not apply to other brands.
What the two charts show
A “Large” is not the same garment everywhere. ADG’s Large has a 27 in chest (about 69 cm). CITEC’s Large lists a 75 cm chest (about 29.5 in), roughly 6 cm more. ADG’s X-Large chest is 30 in (about 76 cm), which is close to CITEC’s Large, not its XL (80 cm). Sleeve length shows a similar spread: 23 in (about 58 cm) on ADG’s Large and XL, 60 cm on CITEC’s Large.
That is the reason to read the measurements and not the letter.
How to read a gown size chart
- Measurements, not letters. Compare the numbers: length, sleeve length and chest.
- Units. ADG publishes inches; CITEC publishes centimetres. Convert before comparing (1 in = 2.54 cm).
- Chest and width. Check whether a chart gives a flat width or a full circumference; a figure labelled “chest” does not say which. The two charts above do not state it, so do not assume.
- Tolerance. CITEC states plus or minus 3 cm. If a chart gives no tolerance, treat the figures as nominal.
- Size labels. Some products are sold in only a few sizes. ADG lists Large and X-Large for this gown.
How to choose a size
A size chart gives the dimensions of the garment, not a fit rule. The reliable starting point is the chart for the specific product, read as length, sleeve length and chest or width figures, together with the maker’s labelling and instructions for use.
Size is separate from protection. FDA recognises the ANSI/AAMI PB70 levels (Level 1, minimal risk, through Level 4, high risk), and FDA advises looking for labelling that describes the intended use and the level of protection wanted. A larger or smaller size does not change a gown’s level; see the AAMI PB70 gown levels guide.
Cuffs, ties and thumb loops
Makers describe closures and cuffs in the product listing. The ADG gown is described with secure neck and waist ties and integrated elastic cuffs. The CITEC gown is described with a knitted cuff and a four-belt tie design. A thumb loop is a cuff feature only where the maker lists it; neither listing above mentions one, so check the product description if you need it.
Isolation gown vs surgical gown sizing
What is an isolation gown, and what types are there?
FDA describes several gown types. Non-surgical isolation gowns are Class I devices (exempt from premarket review) intended to protect the wearer from the transfer of microorganisms and body fluids in low or minimal risk patient isolation situations. Surgical isolation gowns are used when there is a medium to high risk of contamination. Non-surgical non-isolation gowns provide minimal or low barrier protection outside isolation and surgery.
Are surgical gown sizes different?
FDA states that all surgical gowns must be provided sterile and labeled as a surgical gown. The FDA page does not set sizes for either type, so a surgical gown size chart is also maker-specific. For the garment itself, see what a surgical gown is, and for wider PPE context see PPE clothing and lab PPE.
Common mix-ups
- Assuming S/M/L/XL are standard. The charts above show they are not.
- Mixing units. A 27 in chest and a 75 cm chest are about 69 cm and 75 cm.
- Treating level as size. PB70 levels describe barrier performance, not dimensions.
- Using a scrub or glove chart. Other garments have their own sizing; see scrub sizes for scrubs.
- Assuming isolation and surgical gowns share a chart. Each maker publishes its own.
FAQ
What are standard gown sizes?
The FDA gown page and the maker charts reviewed for this guide do not define standard gown dimensions, so there is no standard S, M, L or XL. Use the maker’s chart.
What is an isolation gown size chart?
It is the manufacturer’s table of length, sleeve length and chest for each size label of that product. ADG’s Large, for example, lists 47 in length, 23 in sleeve and 27 in chest.
Is a surgical gown size chart different from an isolation gown chart?
The format is similar (length, sleeve, chest or width), but values come from each maker and each product. The two examples above differ in units, size range and layout.
What are disposable gown sizes?
Disposable gowns are sized the same way as any other: by the maker. The ADG gown above is listed as single-use (disposable) in Large and X-Large.
Sources
Checked 2026-10-30.
- ADG, Sentinel Max Level 2 isolation gown product page and sizing table: https://adg.com/products/respirators/isolation-gown-level-2-sentinel
- CITEC Group, Surgical Gown product page and size table: https://www.citec-group.com/Surgical-Disposables/Surgical-Gown.html
- U.S. FDA, Medical Gowns: https://www.fda.gov/medical-devices/personal-protective-equipment-infection-control/medical-gowns
