Blaklader FR Long Johns with 78% Merino Inherent 1889-1075
If you're working in environments where flame protection matters, these thermal long johns deliver serious performance without compromising on comfort. The Blaklader FR Long Johns combine inherently flame retardant merino wool with modacrylic fibres to create underpants that work hard across both indoor and outdoor settings. The merino interlock construction offers genuine heat retention in wet and dry conditions alike, whilst the elastic waist and contrast-stitched seams keep everything secure during your working day. Built to withstand fine washing up to 60°C, this thermal underwear is designed for professionals who demand quality without cutting corners on safety.
Key Features
- Inherently flame retardant merino wool blend construction
- Arc rated protection against electrical hazards and thermal exposure
- Elastic waist for secure, comfortable fit throughout your shift
- Contrast-stitched seams visible on external leg openings
- Fine washable up to 60°C for easy maintenance
Recommendations from our Unishore Expert
These long johns are engineered for those working where thermal protection is non-negotiable. The merino wool content naturally manages temperature regulation, keeping you warm when conditions turn wet without the bulk of traditional thermal wear. If you're regularly exposed to arc flash hazards or working near open flames, this thermal underwear meets stringent international safety standards to keep you protected. The elasticated leg openings and waist ensure consistent comfort during long shifts, whilst the robust fabric weight of 225 g/m² delivers durability season after season. Layer these beneath your workwear for reliable baselayer performance in demanding industrial environments.
Product Features
- Composition - 78% merino wool, 20% modacrylic, 2% other fibres
- Fabric Type - Merino interlock, flame retardant, antistatic
- Weight - 225 g/m²
- Arc Rating - 7.3 cal/cm²
- Waist - Elasticated
- Leg Opening - Elasticated with contrast-stitched seams
- Leg Length - Full length thermal underpants
- Article Number - 1889-1075
Standards and Safety
- Protection against surface-area flames and thermal radiation EN ISO 11612 A1, B1, C1
- Electric arc protection at Class 1 level against thermal hazards IEC 61482-2
- Static electricity dissipation properties for safe electrical environments EN 1149-5