Blaklader FR Undershirt 78% Merino Inherent 4794-1075

Blaklader FR Undershirt with 78% Merino Inherent 4794-1075

Looking for a flame retardant undershirt that actually keeps you comfortable during long shifts? The Blaklader FR undershirt delivers both protection and performance, making it a solid choice for professionals working in hazardous environments. Built from 78% merino wool blended with modacrylic fibres, this thermal undershirt combines inherent flame resistance with natural temperature regulation. The merino interlock construction works hard whether conditions are wet or dry, and the antistatic properties add an extra layer of safety on site. The extended back panel provides additional coverage, whilst contrast-coloured seams and external certification labels keep everything visible and traceable. At 225 g/m² this isn't flimsy stuff, it's engineered to meet strict safety standards whilst delivering the comfort that makes you want to wear it every shift.

Key Features

• 78% merino wool with inherent flame retardant properties
• Antistatic performance protects against electrical hazards
• Extended back panel offers additional coverage and comfort
• Contrast seam details and external certification labels
• 225 g/m² weight provides durability and thermal performance

Recommendations from our Unishore Expert

This undershirt excels when you're rotating between indoor and outdoor tasks. The merino wool content is your biggest advantage here, as it naturally regulates temperature whether you're sweating through summer work or facing cooler conditions. Because it's inherently flame retardant, the protection is built into the fibres themselves, not a treatment that washes away. The antistatic capability protects you in electrical environments, which is particularly valuable if you're moving between different work areas. We'd recommend pairing this with your Blaklader outer layer for a complete safety system. The extended back panel is more than just a nice feature, it's practical coverage that stays put during physical work. Wash it on a gentle cycle at 60°C to maintain performance.

Product Features

• Material - 78% merino wool, 20% modacrylic, 2% other fibres, merino interlock, flame retardant, antistatic, 225 g/m²
• Sleeve Length - Long sleeves with ribbed cuff detail
• Neckline - Crew neck
• Back Panel - Extended for additional coverage
• Seams - Contrast coloured for visibility
• Certifications - External labels visible on garment
• Article Number - 4794-1075

Standards and Safety

• Flame retardant protection with arc rating 7.3 cal/cm² according to EN ISO 11612 A1, B1, C1
• Electric arc protection up to Class 1 according to IEC 61482-2
• Antistatic properties according to EN 1149-5