Buying guide
Fabric Guide for Doctor Coats, Lab Coats, OT Wear and Patient Gowns
A buying guide to choosing fabric for doctor coats, lab coats, OT wear and patient gowns, with GSM and weave recommendations for each segment of a hospital's uniform programme.

Quick answer
Doctor coats and lab coats need a crisp 210-220 GSM plain-weave PV fabric that stays white through hot institutional wash cycles without yellowing or going limp. OT and surgical wear needs a colour-fast mid-weight fabric, usually deep green or blue, that holds its shade under repeated high-temperature sterile laundering. Patient gowns should be a lighter, softer, economical fabric since gowns are washed most often and touch skin directly, so comfort and cost per garment matter more than structure. Benny Cotts' Benzer Special, Benzzi and Sonata cover this range between them; the right pick depends on which segment you're buying for.
Doctor coats: staying white and structured through institutional wash
A doctor's coat has one job beyond covering the wearer: it has to look clean and sharp every single day, even after a hospital laundry has put it through a hot wash cycle hundreds of times. That means you need a fabric that resists yellowing, holds a crisp structured handle so the coat doesn't go limp and floppy after a few washes, and keeps its white or off-white shade without greying.
Benzer Special at 200-220 GSM in a plain weave is built for exactly this. It's colour-fast and easy-care, so it survives repeated hot institutional washing without losing its whiteness, and the plain weave gives the coat enough body to hold a proper collar and lapel line. Avoid going much lighter than 200 GSM for doctor coats, thinner fabric shows every crease and starts looking tired within weeks.
Lab coats: same demands, different setting
Lab coats in pathology labs, pharma units and diagnostic centres face the same core problem as doctor coats, hot wash cycles and a need to stay white, but they're often subjected to more frequent washing because of the environment they're worn in. The fabric needs the same whiteness retention and structured handle, with a slight edge toward durability since lab coats tend to see rougher daily handling around benches and equipment.
Benzer Special again fits well here, and where budgets are tighter across a large diagnostic chain, Sonata at 190-210 GSM in a plain weave is a workable step-down. It's lighter and more economical, easy-care, and holds up fine for lab settings that don't need the heavier structured feel doctor coats want.
OT and surgical wear: colour-fastness under sterile high-heat laundering
Operation theatre and surgical wear is usually deep green or blue rather than white, chosen deliberately to reduce eye strain under bright surgical lighting and to hide staining better than white ever could. The laundering here is more demanding than for coats: sterile processing runs at higher temperatures with stronger detergents, and any fabric that isn't genuinely colour-fast will fade to a patchy, uneven shade within a month or two.
Benzzi at 200-215 GSM in a plain weave holds its deep green and blue shades well through this kind of repeated high-temperature wash, and its soft handle keeps the garment comfortable for staff wearing it through long procedures. Ask your mill directly about colour-fastness rating for whatever shade you're ordering in OT wear, this is the one area where a fabric mistake shows up fast and is hard to hide.
Patient gowns: soft, economical, and built for volume
Patient gowns are the highest-frequency wash item in a hospital's fabric programme by a wide margin, and they're worn directly against skin by people who are often unwell and sensitive to rough or scratchy fabric. Cost per metre matters more here than for coats or OT wear simply because of the volumes involved, but that can't come at the expense of basic comfort and durability through constant washing.
Sonata at 190-210 GSM is a sensible fit for gowns: it's light, soft-handling, easy-care, and priced to work at the volumes hospitals need without falling apart after a few dozen wash cycles. If your patient population includes longer-stay wards where gowns see even heavier use, moving up to Benzzi's 200-215 GSM gives a bit more longevity for a modest cost increase.
Comparison across the four segments
| Segment | Recommended fabric | GSM range | Weave | Typical shade | Key requirement |
|---|---|---|---|---|---|
| Doctor coats | Benzer Special | 200-220 | Plain | White / off-white | Whiteness retention, structured handle |
| Lab coats | Benzer Special / Sonata | 190-220 | Plain | White / off-white | Whiteness retention, durability |
| OT & surgical wear | Benzzi | 200-215 | Plain | Deep green / blue | Colour-fastness under sterile high-heat wash |
| Patient gowns | Sonata | 190-210 | Plain | Pastel / institutional | Softness, economy at volume |
These are starting points, not fixed rules. A hospital running its own in-house hot-wash laundry will want to lean toward the higher end of each GSM range; one using an external commercial laundry service with gentler cycles has a bit more room to go lighter.
Practical points before you place an order
- All Benny Cotts fabric ships at 150 cm width, which cutters should factor into pattern layout and yardage calculations.
- Minimum order is 50 metres per shade from ready stock, or 500 metres per shade if you need a custom shade or a construction woven to order.
- Ask for a wash-cycle sample before committing to volume, run it through your actual laundry's hot-wash cycle a few times and check for shade change and handle before you order in bulk.
- Keep OT wear and patient gown orders separate even if the shades look similar on a swatch card, they're specified for different GSM and durability needs and mixing them up at order stage causes headaches later.
FAQ
Frequently asked questions
- Can one fabric work across doctor coats, lab coats, OT wear and patient gowns?
- Not well. Doctor and lab coats need a firmer, whiter fabric to hold their structure and look sharp. OT wear needs strong colour-fastness in green or blue under high-temperature sterile wash. Patient gowns need something softer and cheaper because they are washed the most and worn directly against skin. Running one fabric across all four usually means overpaying for gowns or under-serving coats.
- Why do doctor coats and lab coats go grey or yellow over time?
- It usually comes down to the base fibre and finish, not the laundry alone. A poly-viscose blend with a proper white finish holds up to repeated hot washing and chlorine-based institutional detergents much better than a cheap cotton-heavy fabric, which yellows and greys faster under the same conditions.
- What GSM is right for OT wear versus patient gowns?
- OT and surgical wear generally sits around 200-220 GSM, heavy enough to hold shape and colour through sterile high-temperature laundering. Patient gowns can go lighter, around 190-210 GSM, since comfort against skin and cost per metre matter more than structure for a garment that is not doing physical work.
- What is the minimum order quantity for hospital uniform fabric from Benny Cotts?
- From ready stock it's 50 metres per shade. If you need a custom shade or a construction woven to order, the minimum is 500 metres per shade since that requires a dedicated production run.
Updated 18 July 2026 · Benny Cotts, Bhilwara
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