Klein Tools Safety Helmets are engineered for optimal safety, comfort and fit. Compact helmet design and unique features allow the user to comfortably work in confined spaces and a variety of demanding environments. Patent-pending accessory mounts on front and back ensure optional Klein Headlamps attach securely — no straps needed! Low profile design with accessory slots for optional face shields and Klein visors. Compact, lightweight safety helmet design for at-height and confined space applications; low profile bill for unobstructed visibility Tested up to 20kV This Class E Type-1 Safety Helmet has been tested to ANSI/ISEA Z89.1-14 (R2019), CSA Z94.1-15, and select clauses of EN397 and EN12492 Standards for top, front/back, side impact (See instruction manual for details) Accessory mounts on front and back (patent pending) ensure Klein Headlamps (not included) attach securely and precisely — no straps or zip ties needed! 6-point suspension along with chin strap provides improved stability and secure fit when tilting your head Breathable, padded sweat-wicking sweatband and top pad improve comfort and are machine washable Easy, one-handed adjustment with large knob ratchet mechanism, even with gloves on; soft neck pad pivots to clear bandana knots and pony tails Detachable 4-point padded chin strap for comfortable secure fit Universal accessory slots on both sides for attaching hearing protection, face shield and more Dimensions: 10.7" Long x 6.2" High x 8.8" Wide (27.2 x 15.7 x 22.4 cm) Weight: 1.25 lbs (0.6 kg) Klein Type-1 Non-Vented Class-E Safety Helmet, Blue 60147