Why Choose Spawlab.pl?
As an authorised distributor and the leading Weldas seller in Poland, we provide more than just equipment. When you buy from us, you get certainty and full support at every stage.
- 100% Genuine Guarantee: You receive factory-new equipment from official Polish distribution.
- Express Shipping: We ship products directly from our warehouse, with no unnecessary waiting.
- Expert Advice and Full Service: We provide professional technical support and access to all spare parts.
- Trusted by Professionals: Join thousands of welders in Poland who rely on our knowledge and reliability.
Weldas Arc Knight® 38-4340 Welding Bib Overalls
The Arc Knight® line takes a new approach to welding clothing: it combines uncompromising Class 2 protection with a level of comfort and lightness that traditional leather clothing does not offer. Designed for professionals who spend the whole day in protective clothing, the Arc Knight® series strikes a balance between maximum safety, ergonomics and reduced fatigue. It is an engineered solution for the most demanding welders.
Key Features
Hybrid construction: durable FR cotton 520 g/m² with Class A split cowhide reinforcements.
Certified protection in the highest class, Class 2, according to EN ISO 11611.
All seams sewn with heat-resistant 3-ply KEVLAR® thread.
Dielectric (insulated) press studs for improved electrical safety.
Much lower weight and better breathability than all-leather clothing.
Adjustable elastic braces for a good fit and working comfort.
Technical Details and Certification
Materials and Construction
The Arc Knight® 38-4340 bib overalls are a fine piece of materials engineering. The body is made of very heavy yet breathable flame-retardant cotton with a fabric weight of 520 g/m², which provides thermal comfort and freedom of movement. The areas most exposed to spatter and radiant heat, that is the entire front of the legs, are reinforced with panels of top-quality Class A split cowhide. This hybrid build puts protection where it is needed most without weighing down the whole garment. Seams sewn entirely with 3-ply KEVLAR® thread, which resists burning through and tearing, keep the construction intact under extreme conditions. Electrically insulated press studs eliminate the risk of accidental current conduction.
Safety and Certification
Welder safety comes first, which is why the Arc Knight® bib overalls are certified to EN ISO 11611:2015, Class 2/A1+A2. Class 2 is the highest protection level, intended for the most hazardous welding conditions with heavy spatter and high radiant heat. When you choose this model, you can be sure that your protection meets strict European standards and has been verified by independent bodies.
Product Specification
| Feature | Value |
|---|---|
| Main material | Flame-retardant cotton 520 g/m² |
| Reinforcements | Class A split cowhide (front of the legs) |
| Thread | 3-ply KEVLAR® thread |
| Standard | EN ISO 11611:2015 |
| Protection class | 2 / A1+A2 |
| Fastening | Dielectric press studs, adjustable braces |
| Catalogue number | 38-4340 |
What's in the Box?
- 1 x Weldas Arc Knight® 38-4340 welding bib overalls
Recommended Applications
- With Class 2 protection and a hybrid construction, these bib overalls are a strong choice for intensive, all-day welding work, including:
- MMA welding (with basic or cellulosic electrodes).
- MIG/MAG welding at high currents, including with flux-cored wires.
- Self-shielded welding (FCAW-S).
- Plasma cutting, gouging and oxy-fuel cutting.
- Work in awkward positions where both high protection and mobility are required.
About Weldas
Weldas is a brand created by welders for welders. Since 1984 it has supplied professionals around the world with top-class PPE. Guided by a philosophy of uncompromising quality, Weldas controls the entire production process in its own facilities, ensuring the durability, certified safety and comfort that have made it “The Professionals' Choice”.


