Why Base Layers Matter — and What’s Been Missing for Women
When it comes to flame-resistant (FR) workwear, protection often focuses on what you wear on the outside - shirts, pants, and outerwear. But what’s underneath is just as important.
Non-FR undergarments can put you at risk, especially in environments where arc flash and flash fire hazards are present. That’s why base layers deserve more attention and why the newest addition to MWG’s FLEXSAFE™ collection is long overdue: a first-of-its-kind FR Sports Bra, built with inherent flame-resistant fabric and designed specifically for women who work in the trades.
Why FR Base Layers Matter
Standard undergarments made from cotton, polyester, or spandex blends can ignite or melt when exposed to heat, even under compliant FR outerwear. That puts workers at higher risk of serious injury.
Flame-resistant base layers are made to resist ignition and self-extinguish. They act as a second line of defense — adding thermal protection and helping reduce burn severity. They also improve overall comfort and breathability, which makes it easier to stay focused on the job.
Layering properly with FR Base Layer also helps meet the Arc Thermal Performance Value (ATPV) requirements of your gear. Whether you're exposed to arc flashes or flash fires, every layer counts.
A First-of-its-kind FR Sports Bra for Women
The upcoming MWG FLEXSAFE™ Women’s FR Sports Bra is designed with a blend of inherently flame resistant fibers — combining protection and performance in a lightweight, breathable design.
Key features include:
- Inherent flame resistance
- 4-way stretch for ease of movement
- Moisture-wicking comfort for long shifts
- Soft, breathable fabric that sits close to the skin
- A true women’s fit, not just a resized men’s garment
This is the first time women working in high-risk roles will have a flame-resistant base layer built specifically for them — with proper support, function, and comfort.
Not Just About Compliance — It’s About Comfort, Too
Discomfort leads to shortcuts. If your base layers chafe, retain sweat, or restrict your movement, they’re more likely to end up in your locker than on the job.
That’s why FR base layers need to be breathable, flexible, and built to move. And when they also offer inherent flame resistance, they become a reliable part of your overall protection system — not something you think twice about.
Explore FR Base Layer While You Wait
While the FLEXSAFE™ Women’s FR Sports Bra is coming soon, MWG already offers a full lineup of flame-resistant base layers designed for comfort, layering, and protection in hazardous environments. These include:
- MWG FLEXSAFE™ Women’s FR Long Johns (ATPV 4.3)
- MWG FLEXSAFE™ Men’s FR Boxers, T-Shirts, and Long Sleeves
- MWG TRANSMISSION™ FR Crewneck (ATPV 8.2)
All styles are made with inherent FR fabrics that are lightweight, moisture-wicking, and built to perform in real-world working conditions.
Coming Soon
The first-of-its-kind FR Sports Bra is nearly here — finally offering women a base layer that fits the job and the worker.
👉 Explore our full FR base layer collection while you wait — because what’s underneath your workwear matters.