Klein Tools Hard Hats are designed and engineered for optimal safety, comfort and fit. Unique features allow the user to comfortably work in a wide variety of applications and demanding environments. Patent-pending accessory mounts on front and back ensure optional Klein Headlamps attach securely -- no straps needed! Features: Safety hard hat has patent-pending accessory mounts on front and back that ensure Klein Headlamps attach securely and precisely, every time . no straps or zip ties needed!; Breathable, padded sweat-wicking sweatband and top pad improve comfort and are machine washable; Unique suspension system features a flexible open frame design to provide optimal fit and improved air circulation; Easy, one-handed adjustment with large knob ratchet mechanism, even with gloves on, and soft neck pad pivots to clear bandanna knots and pony tails; This Class E, Type 1 hard hat is tested up to 20kV and meets ANSI Z89.1-2014, CSA Z94.1-15; EN397:2012+A1:2012-5.2.4 (Lateral Deformation-LD); EN12492:2012-4.2.1.2, 4.2.1.3, 4.2.1.4 (Front/Back/Side impact); Universal accessory slots on both sides for attaching hearing protection, face shield and more; Reverse donning: suspension can be switched to wear hard hat backwards; Accessories and replacement parts (sold separately): Rechargeable Headlamps (Cat. Nos. 56049, 56048, 56062), Sweatband, Top Pad, Chin Strap, Suspension System (Cat. Nos. KHHSWTBND, KHHTOPPAD, KHHSTRP, KHHSPN); Tested up to 20kV; Tested up to 20kV, this Class E, Type 1 hard hat meets ANSI Z89.1-2014, CSA Z94.1-15; EN397:2012+A1:2012-Lateral Deformation (LD) standards; Patent-pending accessory mounts on front and back ensure Klein Headlamps attach securely and precisely, every time . no straps or zip ties needed!; Klein Rechargeable Headlamp (56034), Alkaline Headlamp, Sweatband, Top Pad, Chin Strap and Suspension System also sold separately; This Class E, Type 1 hard hat is tested up to 20kV and meets ANSI Z89.1-2014, CSA Z94.1-15; EN12492:2012-4.2.1.2, 4.2.1.3, 4.2.1.4 (Front/Back/Side impact) - Warnings: Read, understand, and follow all instructions, cautions and warnings attached to and/or packed with all Hard Hats and Accessories before each use. Failure to follow these warnings and instructions may result in serious bodily injury or death. - Replaced By Products: KHHSPN; KHHSWTBND; KHHTOPPAD; FRKHHSWTBND; FRKHHSTRP; FRKHHTOPPAD