What Should You Wear in a Hyperbaric Chamber?

What you wear in a hyperbaric oxygen chamber is one of those small practical questions people usually want answered before their first session.

Most are not looking for a technical clothing policy.

They just want to know whether they can turn up in normal comfortable clothes, whether they need to change, and whether there is anything they should leave out.

In most cases, the best approach is simple: wear clean, comfortable clothing that Brysk has confirmed is suitable for the session, and avoid overcomplicating it.

The quick answer

The best thing to wear in a hyperbaric chamber is usually clean, comfortable clothing that Brysk has confirmed is suitable for the session. In practice, that normally means clothing that feels easy to sit or lie in, does not dig in, and does not make the session feel fussier than it needs to be.

The main thing to remember is that clothing guidance can vary by chamber and setup. So rather than following the most dramatic rule you find online, follow the instructions that apply to the session you are actually booking.

Why the exact guidance can vary

Hyperbaric clothing rules are not always identical from one setup to another. Some chambers use stricter protocols than others, which is why the right answer is always the one that matches the session you are actually booking.

What usually works best

In general, what works best is clothing that feels easy to relax in for the full session.

That usually means clothing that is:

• Clean
• Simple
• Comfortable
• Easy to sit or lie in
• Non-distracting during a longer session

You are not dressing for anything active or physically demanding. You are dressing for a pressurised session where you will mostly be settling in and staying still.

That is why most people do best in straightforward, comfortable clothing rather than anything tight, fussy, bulky, or awkward to relax in.

At Brysk, that can also mean thinking seasonally. In warmer months, when the chamber can feel a little warmer overall, lighter sportswear or other simple breathable clothing may feel more comfortable than heavier layers.

What should you avoid?

Without turning this into a dramatic checklist, it usually makes sense to avoid:

• Unnecessary jewellery or accessories
• Clothing with lots of hard or awkward attachments
• Restrictive outfits that make it harder to relax
• Anything dirty, heavily fragranced, or coated in products
• Anything the studio has specifically told you not to wear

As a rule, simpler is usually better. If Brysk has given you specific guidance before the session, follow that first.

Do you need to change clothes for a hyperbaric chamber session?

Sometimes not. Sometimes yes. It depends on the chamber setup and the provider’s protocol.

For some hyperbaric oxygen sessions, arriving in comfortable approved clothing may be all you need. In other cases, the studio may ask you to change into specific items or remove certain layers before the session begins.

The easiest approach is to treat this like any other practical booking detail: check the instructions before you arrive, then follow them.

What about bras, underwear, socks, and shoes?

This is another area where people usually want a clearer answer.

The best approach is to keep everything simple, comfortable, and easy to sit or lie in. That usually means avoiding anything bulky, awkward, heavily structured, or irritating over a longer session. If your session is during warmer weather, lighter breathable clothing and simple sportswear can often feel more comfortable than heavier everyday layers.

If the team asks you to avoid, remove, or change certain items, follow that guidance. If they confirm what you are wearing is fine, there is no need to overthink it.

Can you wear jewellery in a hyperbaric chamber?

Best not to assume.

The safer approach is to remove jewellery and unnecessary accessories unless the team has told you otherwise.

Even when an item feels small or harmless, it is usually easier to leave it out of the session than to arrive wearing it and then have to sort it all out at the last minute.

That includes:

• Rings
• Necklaces
• Watches
• Earrings you are able to remove easily
• Anything else the team advises you to leave outside

Can you bring a phone or other electronics into a hyperbaric chamber?

Do not assume you can. What is allowed inside a hyperbaric chamber depends on the setup and the provider’s safety protocol.

At Brysk, it is best to treat phones, laptops, headphones, and other electronic items as things that need checking in advance rather than bringing them by default. In a highly oxygenated chamber environment, the cautious approach is the right one.

That is why the safest assumption is simple: bring only what Brysk has confirmed is suitable for the session.

Why comfort matters more than people expect

This guide is about what to wear, but the real issue underneath it is comfort.

A HBOT session is not physically demanding, but it is long enough that awkward clothing can become annoying very quickly. Tight waistbands, heavy layers, scratchy fabrics, or anything that makes you feel trapped in your own clothes can turn a straightforward session into an unnecessarily fidgety one.

That matters even more in a longer chamber session, where the aim is to settle in properly rather than get distracted by what you are wearing.

That is why the best clothing choice is usually the one that disappears once the session starts.

You should not be spending the appointment thinking about what you are wearing.

What should you bring with you?

Less is usually better.

If Brysk has told you exactly what to wear and what to bring, follow that first. If not, it usually helps to arrive with:

• Clean, comfortable clothing
• A lighter sportswear option in warmer weather if you prefer it
• Only the essentials for the session
• No unnecessary accessories, electronics, or items you have not checked in advance

This is not usually the kind of appointment that needs lots of kit, spare layers, or a bag full of extras unless Brysk has specifically told you otherwise.

If you want a clearer picture of what the chamber experience itself is like, it also helps to read what happens during a hyperbaric oxygen session.

What should you ask before your appointment?

If you want to feel prepared without overthinking it, ask:

• Do I need to change clothes before the session?
• Are there any items I should avoid wearing?
• Can I keep my jewellery on?
• Can I bring my phone or anything to listen to?
• Is there anything chamber-specific I should know before I arrive?

Those questions will usually give you the clearest answer for the session you are actually booking.

If you are still deciding whether HBOT is the right fit more broadly, it may also help to read how to choose the right Brysk session.

So, what should you wear in a hyperbaric chamber?

The best answer is whatever the team running your session has confirmed is suitable for that specific chamber.

In practical terms, that usually means simple, clean, comfortable clothing that lets you settle into the session without distractions.

It does not need to be complicated.

The main thing is not to overcomplicate it. Follow the guidance that actually applies to the chamber and session you are booking.

If you are still comparing HBOT with Brysk’s shorter sessions, it may also help to look at cryotherapy vs red light vs hyperbaric.