Ergodyne GloWear 8370 Class 3 Hi-Vis Long Sleeve Performance Shirt

The Ergodyne GloWear 8370 Performance Hi-Vis Safety Shirt provides ANSI/ISEA 107 Type R Class 3 certified high-visibility protection with performance moisture-wicking fabric and long sleeve construction — delivering the maximum ANSI 107 Class 3 visibility rating in a performance-fabric long sleeve shirt for road construction, highway maintenance, and utility workers who require the highest visibility certification with the sweat-management and comfort characteristics that performance fabric provides during sustained physical labor in warm outdoor conditions. The 8370 is Ergodyne's Class 3 performance long-sleeve hi-vis shirt in a standard all-lime configuration — the same performance moisture-wicking fabric construction as the 8371BK but without the black front accent, providing full lime fluorescent background material coverage throughout the visible garment area for programs that specify uniform lime hi-vis appearance or that prefer maximum fluorescent material coverage. ANSI/ISEA 107 Type R Class 3 certification requires 1,240 square inches of fluorescent background material and 310 square inches of retroreflective tape — the 8370's all-lime configuration places the fluorescent material across the front, back, and sleeves for comprehensive circumferential visibility coverage from all approach angles. Type R classification documents fitness for roadway and highway work zone environments where FHWA, MUTCD, and state DOT specifications require Type R Class 3 for workers in the road right-of-way on high-speed highway projects. Performance fabric construction uses polyester-blend materials engineered for moisture transport — the fabric's wicking structure draws sweat away from the skin surface toward the fabric's outer layers where evaporation carries heat away from the body, maintaining a drier, cooler skin microclimate during sustained physical exertion than cotton or standard polyester weaves achieve. Long sleeve construction protects arms from UV radiation during outdoor work — highway workers and utility personnel who work in direct sunlight for extended periods accumulate significant UV dose on exposed skin, and long sleeve coverage reduces this exposure while contributing to the garment's total background material area.

Ergodyne GloWear 8370 Class 3 Hi-Vis Performance Long Sleeve — Key Features

• ANSI/ISEA 107 Type R Class 3 certified — maximum highway work zone visibility certification
• Performance moisture-wicking fabric — sweat management for sustained outdoor physical labor
• Full lime construction — maximum fluorescent background material coverage on all visible surfaces
• Long sleeve design — arm UV protection and full background material coverage
• Retroreflective tape strips — nighttime and low-light vehicle-driver conspicuity

Specifications

Performance Fabric in Class 3 Hi-Vis: Moisture Management for Highway Work Zone Labor

Highway construction workers who wear hi-vis garments as required PPE throughout summer work shifts encounter a comfort challenge that standard fabric hi-vis shirts cannot fully address: the combination of solar heat loading on the fluorescent fabric, physical exertion from construction labor, and limited moisture escape from close-fitting garments creates a perspiration accumulation environment that cotton and standard polyester fabrics poorly manage. Sweat-saturated fabric loses its thermal regulation function — wet cotton against the skin has high thermal mass and prevents the evaporative cooling that keeps skin temperature regulated during heavy labor. Performance fabric changes this management equation by actively moving moisture away from the skin before it can accumulate to saturation: the polyester microfiber construction creates a moisture gradient that pulls liquid from the skin-adjacent layer toward the outer fabric surface, where increased surface area and air exposure enable faster evaporation. The practical result is that workers wearing the 8370 performance fabric maintain a drier skin contact interface throughout physically intensive work periods, reducing the overheating and discomfort that drives workers to remove or modify their hi-vis garments in ways that compromise compliance. Full lime construction maximizes background material area — every visible portion of the 8370 contributes to the Class 3 background material measurement, creating the broadest possible fluorescent visual profile for vehicle driver detection from all approach angles. This is particularly relevant for highway workers who perform directional tasks (flagging, working on one side of a traffic lane, directing equipment) where their visibility from specific vehicle approach directions depends on the circumferential coverage that full lime construction provides across the torso, arms, and back.

Compliance and Certifications

• ANSI/ISEA 107 — Type R Class 3 certified
• MUTCD compliance — meets highway worker hi-vis requirements

Real-World Benefits

Performance moisture-wicking fabric reduces heat discomfort during sustained highway construction labor — maintaining a drier skin interface during asphalt paving, compaction, and material handling operations in summer conditions where standard fabric garments become heat-retaining and uncomfortable within hours of active work. Highway construction safety managers who have transitioned crews from standard fabric to performance fabric hi-vis shirts report improved wearing compliance during afternoon heat peaks, when standard fabric discomfort is most likely to produce unauthorized shirt removal or layering modifications that compromise ANSI 107 compliance.

Full lime Class 3 certification provides maximum background material coverage for the broadest vehicle-driver detection profile — giving workers the maximum fluorescent visibility area that ANSI 107 Class 3 defines, with retroreflective tape supplementing daytime fluorescence with nighttime retroreflection for multi-shift projects. Highway project safety coordinators who specify Class 3 requirements for high-speed work zones find full lime construction provides the most straightforward compliance verification — all visible garment area contributes to background material measurement, simplifying inspection and documentation.

Applications and Use Cases

• Highway construction — Class 3 performance hi-vis for high-speed work zone crews — 8370 for road construction workers in FHWA/MUTCD Class 3 required highway work zones where performance fabric supports sustained physical labor and full lime construction maximizes visibility coverage
• Utility line and infrastructure work — Class 3 long sleeve for sustained outdoor exposure — performance moisture-wicking for utility workers and infrastructure crews in outdoor environments combining solar heat loading with physical activity where moisture management improves garment compliance
• Multi-shift operations — Class 3 retroreflective for day-night work zone transitions — 8370 for highway operations running across day and evening shifts where both daytime fluorescence and nighttime retroreflection from Class 3 certified garments provide vehicle-driver conspicuity across all lighting conditions

Related Products

For GloWear 8371BK Class 3 performance shirt with black front accent, see Ergodyne GloWear 8371BK Class 3 Performance Shirt Black Front. For GloWear 8368 Class 3 standard fabric long sleeve, see Ergodyne GloWear 8368 Class 3 Hi-Vis Long Sleeve Shirt. For GloWear 8292 Class 2 performance short sleeve, see Ergodyne GloWear 8292 Class 2 Performance Shirt. Browse the complete Hi-Vis Safety Apparel collection.

Frequently Asked Questions

How is "performance fabric" defined in ANSI 107 hi-vis garments?

"Performance fabric" in hi-vis garment context refers to moisture-wicking polyester-blend construction engineered to move sweat away from the skin toward the fabric surface for faster evaporation, as opposed to standard weaves that absorb and hold moisture. Performance fabric doesn't change the ANSI 107 compliance classification — it's a comfort and moisture management feature within the background material specification. The fluorescent dye and background material area requirements are the same for performance and standard fabric garments at the same ANSI 107 class level. Performance fabric is a construction quality differentiator that affects wearing comfort and compliance, not the visibility certification level.

Does washing affect the Class 3 certification compliance of the 8370?

ANSI/ISEA 107 specifies performance requirements for background material luminance (fluorescence) and retroreflective tape reflectivity, with testing conducted on garments after a specified number of wash cycles — garments must maintain minimum performance after washing. However, fluorescent material does degrade with both UV exposure and repeated laundering over the garment's service life. Garments showing significant fluorescence loss (dulled or faded lime color), retroreflective tape delamination, or physical damage should be replaced. Follow Ergodyne's care instructions, inspect garments regularly for performance loss indicators, and replace when visible degradation suggests compliance may be compromised.

What is the difference between the 8370 and 8368 models?

Both the 8370 and 8368 are GloWear Class 3 long sleeve hi-vis shirts in all-lime configuration. The 8370 uses performance moisture-wicking polyester fabric for sweat management during physical labor. The 8368 uses standard hi-vis fabric construction without the performance moisture transport feature. For construction workers performing sustained physical activity in warm conditions, the 8370's performance fabric provides measurably better moisture management. For lower-activity applications, administrative supervision, or programs where fabric performance is not a primary specification, the 8368 provides Class 3 compliance in a standard fabric configuration.