An underscrub is essentially a base-layer shirt designed to be worn underneath scrubs. You can find them in short- and long-sleeve styles, with different fits, colours and fabric options. The right one comes down to your work environment, your personal comfort and, of course, your hospital's dress code.

In this guide, we'll look at what underscrubs are, how the different styles compare, what to consider before buying one, and some of the common questions doctors, nurses and other healthcare professionals have about wearing them.

What is an underscrub?

An underscrub is a shirt worn underneath a scrub top. It works as a base layer and can make your uniform feel more comfortable, particularly when you're wearing it for several hours at a stretch.

Unlike a regular T-shirt, an underscrub is intended to sit neatly underneath medical workwear. Ideally, it shouldn't bunch up beneath your scrub top or get in the way when you're moving around during your shift.

The fabric also makes a difference. Depending on the garment, an underscrub may be soft, lightweight, breathable or designed to manage moisture. These features aren't the same across every product, so it's worth checking the individual garment specifications before you buy.

Why do people wear underscrubs?

There's no single reason. For some healthcare professionals, it's about warmth. For others, it's simply more comfortable to have a soft layer underneath their scrubs.

A few common reasons for choosing an underscrub include:

• Comfort: A soft base layer can make wearing a scrub top for a long shift more comfortable.
• Warmth: Hospitals and clinics can sometimes feel quite cool, especially in air-conditioned areas.
• Moisture management: Some fabrics are designed to move moisture away from the skin, which can be useful during a busy shift.
• Easy layering: An underscrub gives you another layer without having to change your entire uniform.
• Fit and appearance: A well-fitting underscrub can sit neatly underneath your scrub top.
• Personal preference: Sometimes you simply prefer the way your uniform feels with an extra layer.

What types of underscrubs are available?

When you're shopping for an underscrub, one of the first decisions you'll make is sleeve length. The two common options are long sleeve and short sleeve.

Long-sleeve underscrubs

Long-sleeve underscrubs cover more of the arm and can be a comfortable choice if you tend to feel cold at work or simply prefer more coverage.

They're particularly useful for people who spend a lot of time in cool, air-conditioned environments. The sleeve also extends beneath the scrub top, so it's worth checking that the combination feels comfortable and fits within your workplace's dress requirements.

Knya offers long-sleeve underscrub options in different colours and sizes. When choosing one, pay attention to the fit around the arms and shoulders as well as the overall size. You want enough room to move without having excess fabric underneath your scrub top.

One important distinction is worth keeping in mind: an underscrub is a clothing layer. It isn't PPE and shouldn't be relied upon to prevent exposure to bacteria, viruses or other sources of infection. For clinical and operating-room settings, always follow the protective clothing and infection-control requirements of your facility.

Short-sleeve underscrubs

Short-sleeve underscrubs are a simpler option if you don't need the extra arm coverage of a long-sleeve shirt.

They can work well under short- or long-sleeve scrub tops, depending on the fit and design. They're also worth considering if you tend to feel warm during your shift or don't like having another layer around your arms.

As with long-sleeve styles, look at the actual fabric and product specifications rather than assuming that every short-sleeve underscrub will feel the same.

Long sleeve or short sleeve: which underscrub is right for you?

There isn't a universal winner. If you're unsure, think about what bothers you more during a normal shift: feeling cold or having an extra layer around your arms. That usually makes the choice fairly straightforward.

How should an underscrub fit?

Fit is easy to overlook when you're buying an underscrub, but it can make a big difference once you're wearing a scrub top over it.

You generally want the shirt to sit close enough to the body that it doesn't bunch up, while still leaving you comfortable enough to stretch, bend and move normally. An underscrub that's too loose can create unnecessary bulk. One that's too tight may become uncomfortable after several hours.

Don't rely only on your usual T-shirt size. Different brands use different measurements, so check the size chart for the specific product and compare it with your own measurements before ordering.

What fabric should you choose for an underscrub?

There's no one fabric that's right for every healthcare professional. What matters is how the fabric performs for the way you work.

If you'll be wearing your underscrub for most of the day, softness and breathability are worth considering. If you tend to sweat during a busy shift, you may prefer a fabric with moisture-management properties. If you're looking for an extra layer during cooler weather, the fabric's weight and feel may matter more.

Knya's individual product descriptions should be used to check the exact fabric composition and features of each garment. Avoid assuming that an attribute such as moisture-wicking applies to every underscrub on the market.

Which underscrub colour should you choose?

Colour is mostly a matter of personal preference, but your scrub colour and workplace dress code also come into play.

Neutral colours such as white, grey and navy are versatile and can work with different scrub uniforms. If you're wearing a lighter-coloured scrub top, you may also want to consider how visible the underscrub will be underneath it.

Most importantly, check whether your hospital, clinic or educational institution has rules about the colours that can be worn underneath scrubs.

Underscrubs for doctors, nurses and medical students

Underscrubs for doctors

Doctors may choose an underscrub as a comfortable base layer during long clinical shifts. A long-sleeve option can be useful if you prefer more coverage, while a short-sleeve option may suit those who prefer a lighter layer.

Underscrubs for nurses

Nursing shifts can involve a lot of movement, so comfort and a good fit matter. An underscrub can provide an additional layer underneath the uniform without changing the overall look of the scrub set.

Underscrubs for medical students

For medical students, an underscrub can be a practical addition to a clinical wardrobe, especially when scrubs are worn for extended periods. Before choosing a style or colour, check the uniform guidelines of your college or clinical placement.

Can you wear an underscrub in the OR?

This depends on the operating-room policy of the hospital or facility where you work. Some settings may allow particular base layers, while others may have specific requirements for what can be worn in the OR.

If you're unsure, check your facility's current policy before wearing an underscrub. An underscrub is not a substitute for surgical attire or required PPE.

Can you wear an underscrub on its own?

It depends on the garment and where you're wearing it. Although underscrubs are designed primarily to be worn underneath scrubs, some may also work as a casual base-layer shirt.

For clinical environments, however, your hospital or institution's dress code should always take priority.

Where can you buy underscrubs for men and women?

When buying an underscrub, don't look at the appearance alone. Think about how the shirt will feel after several hours of wear. Check the fabric, fit, sleeve length, available sizes, colour options and care instructions.

Knya provides medical apparel for healthcare professionals, including underscrub options. You can explore the available men's underscrubs and choose according to your preferred style and requirements.

Before ordering, check the individual product page for the latest information on fabric, sizing, available colours, care instructions and other product-specific details.

A simple checklist before buying an underscrub

If you're buying one for the first time, these are the things worth checking:

• Does the fabric feel comfortable for extended wear?
• Will the shirt sit comfortably underneath your scrub top?
• Do you prefer long or short sleeves?
• Does the fabric suit the environment where you work?
• Is the colour compatible with your scrub uniform?
• Does your workplace allow the style and colour you've chosen?
• Have you checked the actual size chart?
• Have you read the care instructions?

FAQs about underscrubs

What should you wear under scrubs?

An underscrub is one option for wearing underneath your scrub top. Choose a comfortable base layer that fits well beneath your scrubs and is permitted by your workplace.

Are underscrubs necessary?

No. Many people wear scrubs without an underscrub. It's mainly a personal choice based on comfort, temperature, layering preferences and workplace requirements.

What is the best material for underscrubs?

It depends on what you need from the garment. Softness, breathability, moisture management, stretch and durability are all worth considering. Check the fabric composition and product specifications of the individual underscrub before buying.

Should an underscrub be tight or loose?

It should be comfortable without restricting movement or bunching underneath your scrub top. Use the manufacturer's size chart rather than relying only on your regular T-shirt size.

What is the difference between an underscrub and a regular T-shirt?

An underscrub is designed to work as a base layer underneath medical scrubs. Its fit and fabric may be chosen specifically with medical workwear and extended wear in mind. A regular T-shirt may also be worn underneath scrubs where permitted, but it may not fit or feel the same way.

Why do nurses wear underscrubs?

Nurses may wear underscrubs because they prefer an extra layer underneath their uniform. Depending on the fabric, an underscrub may also provide warmth or help manage moisture during a long shift.

Why do doctors wear underscrubs?

Doctors may wear underscrubs for comfort, warmth or simply because they prefer having a base layer underneath their scrubs. The appropriate sleeve length depends on personal preference and workplace requirements.

Can you wear underscrubs with any scrub top?

Many underscrubs can be worn underneath scrub tops, but the combination should be comfortable and comply with your workplace's uniform requirements. Pay attention to the sleeve length, fit and colour.

Can underscrubs help with sweating?

Some underscrubs are made with moisture-wicking or moisture-management fabrics. These fabrics are designed to move moisture away from the skin, although performance varies by garment and fabric.

How do I choose the right underscrub size?

Measure yourself and compare your measurements with the product's size chart. The right size should allow comfortable movement while sitting smoothly underneath your scrub top.

Are long-sleeve or short-sleeve underscrubs better?

It depends on your preference and working environment. Long sleeves provide more coverage and may be useful in cooler settings, while short sleeves offer a lighter layer. Your workplace's dress code should also be considered.