Ariat FR M4 Relaxed Basic Boot Cut Jean, Alloy 10020812

Serious protection in a classic work jean. The Ariat FR M4 Relaxed Basic Boot Cut Jean is built from 13 oz ring-spun, 100% cotton denim with permanent flame resistance — no stretch, no compromise. The relaxed fit through the waist, hip, and thigh gives you room to move all day, while the classic 19" boot cut leg opening stacks perfectly over your work boots.

FR Protection

• CAT 2 rated — dual-hazard protection against flash fire and electrical arc
• Arc rating: 19 cal/cm² — protects against second-degree burns from electrical arc exposure
• Meets NFPA 70E / ASTM F1506 performance requirements
• UL® classified to NFPA 2112
• Permanently flame resistant — protection does not wash out

Built for the Job

• Extra-deep front pockets for secure storage
• Strategically reinforced belt loops at key stress points
• No-rub comfort inseam lays flat to minimize chafing during all-day wear
• Heavy-duty zipper and hardware for lasting reliability

Construction

• 13 oz ring-spun denim — 100% Cotton, classic non-stretch
• Made in Mexico with fabric from the USA
• Relaxed fit — mid rise, relaxed through waist, hip, and thigh
• 19" boot cut leg opening

Available in waist sizes 29–60, inseam lengths 30–36.