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Optrel IsoFit® Headgear (black, green knobs), 5003.291
The Optrel IsoFit® headgear is a major upgrade for professional welders who value uncompromising comfort and ergonomics during long hours of work. Designed as the only system in the world with full three-dimensional adjustment, IsoFit® adapts to any head shape, significantly reduces the load on the neck and eliminates pressure points. It is the key element that turns an excellent welding helmet into a tool fully integrated with its wearer, raising productivity and safety to a new level.
Key features
Three-dimensional 3D adjustment
Width, length, height
Two-layer construction
Stability and fit
Replaceable Tricot pads
Hygiene and comfort
Full compatibility
Panoramaxx, Sphere, Liteflip, Y-Series
Technology details
The IsoFit® Design, Ergonomics at the Highest Level
IsoFit® technology is based on a clever two-layer frame integrated with a precise cable system operated by a knob. The flexible inner layer, together with soft stabilisers at the forehead and the back of the head, wraps around the head and gives a personalised fit over the whole contact surface. At the same time the rigid outer layer stays completely still, keeping the helmet perfectly stable and in position even when you work in extreme awkward positions. The whole headgear is lined with replaceable, hygienic pads made of breathable Tricot fabric. Investing in the IsoFit® system is a direct investment in the health of your cervical spine and in being able to work with full concentration all day.
Technical specification: welding helmet
| Feature | Value |
|---|---|
| Catalogue number | 5003.291 |
| Adjustment | Three-dimensional (3D): width, length, height |
| Fit range | Sizes S to XL (maximum head circumference 62 cm) |
| Materials | High-quality plastic, cable system, replaceable Tricot comfort pads |
| Compatibility | Designed for Optrel Panoramaxx, Sphere, Liteflip and Y-Series welding helmets |
What's in the box?
- Complete Optrel IsoFit® headgear (cat. no. 5003.291) with black shell and green adjustment knobs
- Integrated set of replaceable Tricot comfort pads
Main applications
- Upgrading the standard headgear in compatible Optrel helmets.
- More comfort, stability and better ergonomics during long, demanding welding and grinding work.
- An ideal solution for welders working in awkward positions, where good balance and helmet stability are essential.
About Optrel
Optrel is a Swiss innovation leader in welding protection. When you choose this brand, you invest in decades of engineering experience, uncompromising build quality and technology that keeps setting the highest standards of safety and comfort on the global market. Trust the precision that professionals around the world rely on.


