ADVANCED THERMAL REGULATION PERFORMANCE

Mitigating heat stress is a mission-critical objective for maintaining high output and crew safety in extreme environmental conditions. The Milwaukee 48-73-4544 BOLT Safety Helmet Cooling Liner is a precision-engineered PPE solution that utilizes high-performance evaporative microfiber technology. By leveraging a simple 30-second hydration cycle, this liner provides a sustained thermal barrier, wicking heat away from the user for up to four hours. Designed for seamless fleet integration, it maintains the structural fit of the BOLT system while providing an essential layer of comfort during heavy-duty summer operations or high-temp industrial environments.

/ SUSTAINED COOLING RELIEF: Delivers up to 4 hours of active cooling per water activation for maximum jobsite uptime.
/ RAPID HYDRATION SYSTEM: Achieves full cooling capacity with a mere 30-second soak in water.
/ BOLT ECOSYSTEM COMPATIBLE: Engineered for a perfect fit with all Milwaukee safety helmets without interfering with other accessories.
/ ENHANCED PADDED COMFORT: Soft-touch construction reduces helmet pressure points during extended shifts.
/ FIELD REUSABILITY: Machine washable design ensures the liner can be sanitized and reused across the entire project lifecycle.

TECHNICAL SPECIFICATIONS

Activation Time: 30 Seconds
Cooling Duration: Up to 4 Hours
Material: Evaporative Microfiber
Compatibility: All Milwaukee BOLT Safety Helmets
Attachment: Hook and Loop
Maintenance: Machine Washable

WHAT'S IN THE BOX

/ (1) BOLT Safety Helmet Cooling Liner (48-73-4544)

Cooling Gear

Milwaukee BOLT™ Safety Helmet Cooling Sweat Band 48-73-4543

Milwaukee BOLT Hard Hat Cooling Sweat Band 48-73-4542

Milwaukee Cooling PVA Towel 48-73-4540

Milwaukee Cooling Microfiber Towel 48-73-4541

Milwaukee BOLT Cooling Skull Cap 48-73-4545

Milwaukee BOLT Safety Helmet Cooling Liner 48-73-4544

KLEIN TOOLS Cooling Do Rag (2 PACK)

KLEIN TOOLS Cooling Helmet Liner