Understanding Hyperbaric Chamber Attire: Why It Matters

When preparing for a hyperbaric oxygen therapy (HBOT) session, one of the most common questions is, “What to wear in a hyperbaric chamber?” The answer is not just about comfort—it’s a critical safety requirement. Hyperbaric chambers are pressurized environments where specific clothing rules apply to minimize fire risks, ensure proper oxygen flow, and avoid equipment interference. This guide breaks down everything you need to know for a safe and comfortable experience. For a more detailed overview, check out What To Wear In A Hyperbaric Chamber recommendations from experts.

Essential Clothing Guidelines for Hyperbaric Therapy

Cotton vs. Synthetic Materials: The Golden Rule

The number one rule for hyperbaric chamber attire is to avoid synthetic fabrics like polyester, nylon, or spandex. In a high-oxygen environment, synthetics can create dangerous static electricity, increasing fire risk. Instead, opt for 100% cotton clothing, which is naturally breathable, non-static, and safe. Cotton also helps regulate body temperature as chambers can feel warm. For example, a simple cotton t-shirt, joggers, or scrubs are ideal choices.

Footwear and Socks Safety

Shoes are typically not allowed inside most hyperbaric chambers due to spark risks from metal eyelets or zippers. The best option is to wear cotton socks—preferably without elastic bands that can restrict circulation. If the chamber requires footwear, use special anti-static shoes provided by the facility. Always check with your technician about specific policies on safe footwear for hyperbaric chambers.

Accessories and Personal Items to Avoid

Before stepping in, remove all non-cotton accessories: jewelry, watches, hearing aids, and even underwire bras (which contain metal). Cell phones, wallets, and credit cards are also prohibited as pressure changes can damage devices. Eyeglasses are usually allowed, but many prefer contact lenses or prescription goggles provided by the clinic. If you use a respiratory device, ensure it is made of certified non-metallic materials.

What About Undergarments and Warmth?

Since chambers maintain a stable temperature (around 68-72°F), cotton underwear is strongly recommended. Avoid polyester or nylon undergarments, including “activewear” styles. For warmth, a cotton hoodie or lightweight jacket is perfect—but ensure it has no plastic zippers or drawstrings with metal tips. Some patients bring cotton blankets provided by the clinic, while others pack their own 100% cotton throw.

Maternity and Medical Considerations

Pregnant women or individuals with medical devices (like insulin pumps) should consult their doctor first. For infant or pediatric chambers, the same cotton-only rule applies, with soft, loose-fitting clothing for baby’s comfort. If you have sensory issues, ask about sensory-friendly hyperbaric therapy clothing that minimizes tag or seam irritation.

Frequently Asked Questions About Hyperbaric Chamber Attire

Can I wear pajamas or hospital gowns?

Yes, as long as they are 100% cotton. Many facilities provide cotton hospital gowns, but you can bring your own pajamas or scrubs for comfort. Just