Our BOLT™ IMPACT ARMOR™ liner provides you advanced slip, trip & fall protection on the jobsite. Injuries from slips, trips, and falls are some of the most common and can result in oblique impact forces being passed to the brain. These oblique impacts can cause Traumatic Brain Injuries (TBIs). Our BOLT™ IMPACT ARMOR™ liner delivers the best oblique impact protection† to help protect the brain (through RHEON™ technology). This Liner is fully compatible with all Milwaukee Tool Type 2 Safety Helmets(sold separately). It has both anti-microbial and moisture wicking properties and is machine washable. †Based on impacts at a 45° angle at a speed of 6.5 M/s averaged across 16 testing locations around the full helmet circumference. Click Here For All Milwaukee BOLT Hard Hat Accessories.. Features: Advanced Slip, Trip & Fall Protection IMPACT ARMOR™ Liner Delivers the Best Oblique Impact Protection† (utilizing RHEON™ Technology) †Based on impacts at a 45° angle at a speed of 6.5 M/s averaged across 16 testing locations around the full helmet circumference. Antimicrobal - Prevents Odor and Bacteria Compatible with Milwaukee® Safety Helmets(sold separately) Removable And Machine Washable Soft Polyester Construction for Comfort Liner Reduces Pressure Points for Additonal Comfort Attaches to Suspension with Velcro Lightweight Design for All Day Wear Specifications: Head Protection Type: Accessories BOLT: Yes Weight: 0.25 lb Length: 10.25 in Height: 0.5 in Width: 8.5 in Material Composition: Composite Includes: (1) BOLT™ IMPACT ARMOR™ Liner(48-73-1382) Milwaukee BOLT™ IMPACT ARMOR™ Liner 48-73-1382