Choosing the right attire is not just about comfort; it is a critical safety consideration when entering a pressurized environment. Many first-time visitors ask, What Do You Wear In A Hyperbaric Chamber? The answer is simpler than you might think. The primary rule is to wear 100% cotton or other non-synthetic, fire-resistant materials. This is because synthetic fabrics like polyester or nylon can generate static electricity, which poses a significant explosion risk in an oxygen-rich atmosphere. Furthermore, removing all jewelry, watches, and metallic items is mandatory, as these can cause pressure point injuries or spark hazards. Always follow your specific facility’s guidelines, but focusing on breathable, natural fibers is the universal standard for hyperbaric chamber clothing.

The Risk of Synthetic Materials in Hyperbaric Chambers

When preparing for a session, it is crucial to understand why your wardrobe choice matters. The chamber environment is highly enriched with oxygen to promote healing. In such conditions:

• Static electricity risk: Synthetic fabrics like acrylic, spandex, or polyester easily generate static buildup. A simple movement can create a spark, which could ignite oxygen-rich air.
• Fire hazard: Nylon and polyester melt at high temperatures, sticking to skin and causing severe burns.
• Gas entrapment: Loosely woven synthetics can trap pocket of oxygen, accelerating flame propagation.

Always choose clothing made of 100% cotton or natural fiber blends certified as fire-resistant. If you are still uncertain about garments, consider reading more about What Do You Wear In A Hyperbaric Chamber to find a comprehensive material checklist.

Prohibited Items: Metal and Accessories

Beyond cloth fabrics, removing accessories is non-negotiable. Metallic objects can become dangerous projectiles or cause bruising under high pressure. Items to avoid include:

• Jewelry: Rings, necklaces, earrings, nose rings, and bracelets.
• Watches and fitness trackers: These contain batteries and metal bands.
• Eyeglasses: Glass or plastic frames can crack or shatter. Use only FDA-approved frames without metal.
• Dental retainers or hearing aids: These can contain small metal components.
• Smartphones, keys, and coins: Store them safely in lockers provided by the facility.
• Hair clips, bobby pins, or hidden piercings: Ensure no metal remains on your person.

Most facilities provide a full-body disposal coverall or ask you to change into their reusable cotton garments. Even then, always double-check your pockets and body jewelry.

Footwear and Socks: What to Wear on Your Feet

In many outpatient medical hyperbaric chambers, you may sit or lie down for 1-2 hours. Here are key tips:

• Preference for cotton socks: Choose thick cotton knit socks without any synthetic elastic bands. Avoid knee-highs that constrict circulation.
• No shoes inside the chamber: Most facilities require you to remove shoes before entering, but you can wear cotton slippers if permitted by protocol.