Klein Tools Hard Hats were 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 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; Adjustable vents can be opened or closed for maximum air circulation while meeting stringent safety standards; Unique suspension system features a flexible open frame design to provide optimal fit and improved air circulation; Class C, Type 1 hard hat with adjustable vents 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); Easy, one-handed adjustment with large knob ratchet mechanism (even with gloves on). Soft neck pad pivots to clear bandanna knots and pony tails; Universal accessory slots on both sides for attaching hearing protection, face shield and more; Includes removable Klein Headlamp/Magnetic Worklight (KHH56220) with 3xAAA batteries; Klein Rechargeable Headlamp (#56034), Alkaline Headlamp, Sweatband, Top Pad, Chin Strap and Suspension System also sold separately; Adjustable Vents; Class C, Type 1 hard hat with adjustable vents 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!; Hard hat is Class C, Type 1 with adjustable vents and meets ANSI Z89.1-2014, CSA Z94.1-15; EN397:2012+A1:2012-Lateral Deformation (LD) standards; Includes removable Klein Headlamp/Magnetic Work Light (KHH56220) with 3xAAA batteries; Klein Rechargeable Headlamp, Alkaline Headlamp, Sweatband, Top Pad, Chin Strap and Suspension System also sold separately; Easy, one-handed adjustment with large knob ratchet mechanism (even with gloves on). Soft neck pad pivots to clear bandana knots and pony tails - 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; KHH56220