Not All Hi Vis Is Built the Same

FR Hi Vis vs Regular Hi Vis Shirt Real Test

Hi vis shirts are everywhere on the jobsite. But not all hi vis clothing is built the same.

They help you stay visible around traffic, equipment, and low light conditions. But visibility alone does not mean protection.

To show the difference, we ran a simple real world test.

We recently ran another fire test comparing a regular shirt and a flame-resistant work shirt. If you want to see how everyday clothing reacts to flame, you can read our first flame test here.

This time, we wanted to see what happens with hi vis shirts.

We set a regular hi vis T-shirt and our flame-resistant hi vis shirt on fire side by side.

Watch the test below and see the difference for yourself. 

 

Regular Hi Vis vs FR Hi Vis Fire Test

What Happens When You Set a Hi Vis Shirt on Fire?

The difference shows up right away.

When we set the regular hi vis shirt on fire, the fabric began burning immediately. The material started melting and dripping as the flame spread.

This is common with many regular hi vis garments made with synthetic materials.

When those fabrics are exposed to heat or flame, they can melt and stick to skin, which can make injuries much worse.

Now look at the flame-resistant hi vis shirt.

When we set it on fire, the shirt resisted the flame. The material stayed intact and did not melt or drip.

From the outside, both shirts may look similar. But once heat is involved, the difference becomes obvious.

Why FR Hi Vis Clothing Matters?

Many people assume that if a shirt is hi vis, it must be safe for hazardous environments.

That is not the case.

Regular hi vis clothing is designed to improve visibility. It is not built to handle heat or flame hazards.

At MWG Apparel, we design and manufacture flame-resistant workwear for industries where protection matters.

If your job involves electrical equipment, utilities infrastructure, or industrial environments, you need PPE that does more than just help you get seen.

Flame-resistant hi vis clothing combines visibility with protection, helping reduce the risk of severe burn injuries in environments where heat or arc hazards may be present.

Do Hi Vis Shirts Melt in Fire?

Many regular hi vis shirts can melt when exposed to flame.

That is because many are made with polyester or other synthetic materials. When these fabrics are exposed to high heat, they can soften, melt, and drip.

This melted material can stick to skin and increase burn injuries.

Flame-resistant fabrics are designed differently. Instead of melting or continuing to burn, they resist ignition and self-extinguish once the flame source is removed.

That difference is exactly why flame-resistant PPE is required in many high-risk work environments.

Is Hi Vis Clothing Flame Resistant?

Not always.

Many hi vis garments are designed only to improve visibility. They are not built to protect against flame or heat hazards.

Some hi vis shirts made with synthetic fabrics can melt when exposed to flame.

Flame-resistant hi vis clothing is specifically designed for environments where both visibility and flame protection are required.

The Right Hi Vis Makes the Difference

This simple fire test shows something important.

Two hi vis shirts can look almost identical on the outside, but the fabric and protection behind them can be completely different.

Regular hi vis helps you get seen.

FR hi vis clothing is built for jobs where visibility alone is not enough.

If you want to learn more about flame-resistant workwear or FR hi vis clothing, contact us and we will be happy to help.

Back to blog