How to choose the right structural firefighting boot

Firefighter boots are expected to do a lot on every scene. They must protect against multiple and sometimes extreme hazards while allowing firefighters to move, climb, crawl and work for long periods under load.

That balance — protection versus performance — can pose a challenge in choosing the structural firefighting boot you’ll wear.

What the standards say

OSHA Regulation 1910.136 says employers must provide protective footwear for employees who work in areas where there are dangers of foot injuries due to falling, rolling or piercing objects and in areas where their feet are exposed to electrical hazards. Boots that are labeled to NFPA 1970 meet and exceed this OSHA requirement.

Structural firefighting boots must be certified to meet NFPA 1970, Standard on Protective Ensembles for Structural and Proximity Firefighting, Work Apparel, Open-Circuit Self-Contained Breathing Apparatus (SCBA) for Emergency Services, and Personal Alert Safety Systems (PASS).

In addition to design requirements, NFPA 1970 sets forth several performance requirements, which include but are not limited to:

• For flame resistance, in a whole-boot flame test, the boot must not melt, drip or exhibit any burn-through, and any after-flame must be less than five seconds.
• For heat and thermal resistance, no melting, separating, ignition or water penetration is permitted, and all components must remain functional.
• For liquid penetration, upper material and seams must prevent liquid penetration for at least one hour.
• For viral penetration, upper material and seams must prevent bacteriophage penetration for at least one hour.
• For cut resistance, uppers must not have a cut resistance distance of more than 20 millimeters (0.8 inch).
• For puncture resistance, uppers must resist puncture under applied force of 60 newtons (13 pounds).
• For electrical insulation, no current leakage in excess of three milliamps (3/1,000 of an ampere).
• For slip resistance, footwear shall have coefficient of friction of 0.4 or greater, which indicates the ability of the footwear to resist slipping under specified test conditions.

Beyond compliance, departments, decision-makers and firefighters must also understand the importance of usability and performance to firefighter safety.

What the research shows

Research continues to reinforce several key truths about firefighter footwear.

1. Weight matters more than many departments realize — Heavier boots increase fatigue, reduce mobility and can contribute to trips and falls. A 2012 investigation of the effect of boot weight and sole flexibility on firefighters’ gait and physiological responses found firefighters were more likely to trip over obstacles when wearing heavier boots and that boot weight increased metabolic variables (oxygen consumption and related physiological demand) by around 5% to 11% for every kilogram increase in boot weight.¹

More recently, a 2024 study from China confirmed firefighters’ scene footwear “significantly alters the biomechanical characteristics of firefighters’ lower limbs during walking,” leading to elevated muscle activation in key lower limb muscle groups.² This increased demand raises the risk of fatigue, musculoskeletal injuries and osteoarthritis, authors said, and they recommended boots be constructed of lightweight and flexible materials.

In 2022, a generalized scoping review of occupational footwear’s impact on task performance and injury risk — which included firefighters among other subjects — found footwear commonly impacted workers’ gait, joint ranges of motion, posture and balance, physiological measures, muscle activity and some occupational tasks.³ Boots were among the types of footwear associated with injuries in some settings.

Additional research testing firefighters on treadmills found their oxygen consumption during exertion was higher when wearing boots than running shoes, suggesting greater metabolic demand.⁴

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2. Flexibility improves efficiency — More flexible soles reduce physiological strain and improve movement efficiency. That 2012 study found oxygen consumption increased with boot weight, but more flexible soles helped reduce it, producing a 5%–7% decrease.¹

3. Traction is a safety issue, not just a feature — A 2024 NFPA report documents that slips and falls remain a top cause of fireground injuries.⁵ Slip resistance therefore remains critical, especially in wet, icy or debris-filled environments. NFPA 1970 includes baseline slip resistance performance requirements.

4. Fit and ankle support prevent injuries — Proper fit and support reduce strains, sprains and fatigue, which are other leading causes of injuries on the fireground.⁵

Footwear directly influences two of the top causes of injuries on the fireground: overexertion-related strain and slips, trips and falls. The takeaway is that the best suited structural boot isn’t just the most protective — it’s the one that also allows firefighters to perform efficiently without unnecessary physical strain.

Checklist: Key attributes to evaluate

When evaluating structural firefighter boots, departments should consider a broad set of performance characteristics:

• Weight — Lighter boots help reduce fatigue and improve mobility.
• Flexibility — Boots should support natural movement and help reduce strain.
• Slip resistance — Critical for helping to prevent injuries.
• Thermal protection — Meets NFPA requirements without overburdening the wearer.
• Breathability — Helps manage heat stress and moisture.
• Durability — Impacts lifecycle cost and long-term value.
• Fit and comfort — Directly tied to performance and injury prevention.

Ranking these attributes can help departments make more objective purchasing decisions. However, no specification sheet can replace real-world testing. Wear trials remain one of the most effective ways to evaluate boots. Departments should fit multiple firefighters across sizes and roles, test boots through realistic training evolutions and compare options side-by-side. This provides insight into mobility, comfort and durability that cannot be captured through lab testing alone.

Other considerations

Today departments looking for performance, comfort and reduced fatigue often select leather.

In the past, departments favored rubber boots for cost, waterproofing and ease of donning. Leather boots, however, are often significantly lighter and more flexible with greater range of motion, and provide better fit, ankle support and, with the right outsole, slip resistance. Modern designs have integrated advanced materials, better outsoles and enhanced moisture barriers.

Composite toe caps and other boot components are also increasingly supplanting steel. Composite materials meet NFPA impact and compression requirements, reduce overall boot weight and provide better thermal insulation.

Matching the mission

Not all firefighting boots are designed for the same job. First responders require different footwear for different missions:

• Structural firefighting — Maximum thermal protection, puncture resistance, durability.
• Proximity firefighting — Enhanced radiant heat resistance for high-heat environments.
• Wildland firefighting — Lightweight, breathable, high-mobility designs for prolonged operations.
• Technical rescue — Superior grip, flexibility, precision movement.
• EMS operations — Bloodborne pathogen resistance, comfort, all-day wearability.
• Liquid splash/CBRN environments — Chemical resistance, decontamination capability.

Boot styles are designed to meet different NFPA requirements.

For any boot selection, the most effective way to evaluate differences is through wear trials under realistic conditions. How a boot performs on the scene is equally important to how it performs on paper — or even in a controlled test.

For more information, visit Globe Boots.

References

1. “Effect of boot weight and sole flexibility on gait and physiological responses of firefighters in stepping over obstacles.” Sharon S. Chiou, Nina Turner, Joyce Zwiener, et al. Human Factors. 2012. https://journals.sagepub.com/doi/10.1177/0018720811433464
2. “Effects of using exposure footwear for firemen and fitness training shoes on lower limb biomechanics during walking.” Jianwei Duan, Chunlong Xie, Yingzheng Hong, Shengnian Zhang. Scientific Reports. 2024. https://pubmed.ncbi.nlm.nih.gov/39572553/
3. “The impact of footwear on occupational task performance and musculoskeletal injury risk: A scoping review to inform tactical footwear.” Robin Orr, Danny Maupin, Robert Palmer, et al. International Journal of Environmental Research and Public Health. 2022. https://pubmed.ncbi.nlm.nih.gov/36078419/
4. “The impact of firefighter personal protective equipment and treadmill protocol on maximal oxygen uptake.” Joo-Young Lee, Ilham Bakri, Jung-Hyun Kim, et al. Journal of Occupational and Environmental Hygiene. 2013. https://pmc.ncbi.nlm.nih.gov/articles/PMC4620539/
5. “United States Firefighter Injuries in 2024.” National Fire Protection Association. https://www.nfpa.org/education-and-research/research/nfpa-research/fire-statistical-reports/firefighter-injuries-in-the-united-states