Style guide

What to Wear Under Scrubs (and the Long-Sleeve Catch Nobody Mentions)

· Hedy Nie· 6 min read
What to Wear Under Scrubs (and the Long-Sleeve Catch Nobody Mentions)

Under scrubs you are really solving three problems at once: staying comfortable through a long shift, not showing through a thin top, and managing temperature in a building that swings from freezing to overheated. Most guides stop there. The part they skip is that on some units, the long-sleeve layer you want for the cold is against policy. Here is what actually works, for women and men, and the catch to check before you buy a drawer full of base layers.

On top: the base layer

A thin t-shirt or a fitted tank is the standard base layer. It wicks sweat off your skin, adds a little warmth in cold units, and stops a lighter scrub top from showing your bra. Three rules make the difference:

  • Skip heavy cotton. Cotton soaks and stays wet, which defeats a moisture-wicking scrub and leaves you cold and damp by mid-shift. A thin synthetic or merino wicking layer beats it. A nurse on r/Nurses mentioned wearing a Smartwool shirt under her scrubs for warmth without the sweat.
  • Match the color to your skin, not the scrub. Under a light scrub top, a nude layer close to your skin tone disappears, while a white one can actually show through more.
  • Watch the sleeve length. One nurse on r/nursing said she sizes her scrub top up because her Kirkland undershirt sleeves stick out past the scrub sleeve. If your base layer peeks out, go up a size on the top or pick a shorter sleeve.

Bras

Most people land on seamless or a sports bra. You are reaching, bending, and on your feet for twelve hours, so no-dig straps and no visible seam lines matter more than anything fancy. A seamless cut keeps lines from showing under a fitted top.

On the bottom

Plain, no-show underwear is the goal, so seamless styles are the usual pick. On long shifts a lot of nurses add compression shorts or leggings under their scrub pants to help with leg fatigue and swelling from standing all day. Keep them thin so they do not bulk up under the pants.

The cold-unit problem, and the catch

Clinical floors run cold, and an over-air-conditioned OR or L&D room is worse. The instinct is a long-sleeve thermal or compression layer under the scrub top, and on plenty of units that is fine.

Here is the catch most guides skip: some units do not allow it. The bare-below-the-elbows rule is an infection-control standard that requires forearms uncovered during direct patient care, so hands and wrists can be properly washed. It is standard across the NHS in the UK and shows up on stricter US units too, especially ICU and anywhere with tight infection control. Where it is enforced, a long-sleeve base layer has to come off for patient care, which makes it useless as a warmth layer on shift. Check your unit's dress code before you stock up on long sleeves. On those floors, a warm-up jacket you remove for care, or a short-sleeve wicking layer, is the safer bet.

What about underscrubs?

An underscrub is just the purpose-built version of the base layer: a fitted, wicking, often long-sleeve shirt made to sit invisibly under a scrub top. They make sense if you run cold and your unit allows sleeves. The same bare-below-the-elbows caveat applies. If sleeves are banned on your floor, a fitted tank-style underscrub gives you the wicking and coverage without the forearm problem.

What guys wear under scrubs

Same logic, fewer options argued about. A thin fitted tee or a moisture-wicking athletic undershirt is the standard, in a color that does not show under the scrub. The skin-tone-matching point still holds for lighter tops, the bare-below-the-elbows caveat still applies to long sleeves, and the keep-it-thin rule still matters so you do not add heat on a warm unit.

Common mistakes

  • Heavy cotton underneath. It soaks, stays wet, and cancels out a wicking scrub.
  • Layers too thick. The whole point of scrubs is freedom to move, and a bulky underlayer fights that.
  • A white layer under a light top. It shows more, not less. Match your skin tone instead.
  • Buying a pile of long sleeves before checking the dress code. If your unit is bare-below-the-elbows, they will sit in a drawer.

The Eipnare view on this

We build the scrub, not the layer under it, but the two interact. A moisture-wicking scrub like our ShiftWeave fabric does less of its job if you trap a wet cotton shirt against your skin underneath, so if you are going to layer, layer with a wicking fabric. And if see-through is the only reason you are layering, that is worth fixing at the scrub level instead. Our guide on how to tell if scrubs are see-through covers which fabrics stay opaque, so you need less from the layer underneath.

FAQ

What do you wear under scrub tops?

A thin t-shirt or a fitted tank in a moisture-wicking fabric is the standard. It keeps sweat off your skin, adds a little warmth, and stops a lighter top from showing your bra. Match the layer to your skin tone under light scrubs, and skip heavy cotton because it stays wet.

Do you wear a bra under scrubs?

Yes, and most people choose a seamless bra or a sports bra. With a full shift of reaching and bending, no-dig straps and no visible seam lines matter more than style. Seamless keeps lines from showing under a fitted scrub top.

Can you wear long sleeves under scrubs?

It depends on your unit. Many floors allow a long-sleeve base layer for warmth, but units that enforce a bare-below-the-elbows infection-control policy require forearms uncovered during patient care. That is standard across the NHS and on stricter US units like ICU. Check your dress code before relying on long sleeves.

What are underscrubs?

Underscrubs are fitted, wicking shirts, often long-sleeve, designed to sit invisibly under a scrub top for warmth and coverage. They suit cold units that allow sleeves. If your floor bans long sleeves, a tank-style underscrub gives the same wicking without covering the forearms.

What do guys wear under scrubs?

A thin fitted tee or a moisture-wicking athletic undershirt in a color that does not show under the scrub. Keep it thin so it does not add heat, match your skin tone under lighter tops, and check the long-sleeve policy on your unit.

Read next

Edited by Hedy Nie, COO of Eipnare. Connect on LinkedIn.

Back to Style guide