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. Patented accessory mounts on front and back ensure optional Klein Headlamps attach securely without the need for straps!Features Class E, Type 1 protection tested to 20 kV and compliant with ANSI Z89.1-2014 (HT/LT), CSA Z94.1-15, EN397:2012+A1:2012-5.2.4 (LD), and EN12492:2012-4.2.1.2, 4.2.1.3, 4.2.1.4 (Front/Back/Side-Impact) Safety hard hat has patented accessory mounts on front and back ensure optional Klein Headlamps attach securely and precisely, every time; no straps or zip ties needed Accessories sold separately: Rechargeable headlamp (Cat. No. 56062, KHH56308), sweatband, top pad, chin strap, suspension (Cat. Nos. KHHSWTBND, KHHTOPPAD, KHHSTRP, KHH6SPN) and turbo fan (Cat No60821) Made In USA: With Global Components Unique suspension system features a flexible open frame design to provide optimal fit and improved air circulation Breathable, padded sweat-wicking sweatband and top pad improve comfort and are machine washable Tested up to 20kV Universal accessory slots on both sides for attaching hearing protection, face shield and more Easy, one-handed adjustment with large knob ratchet mechanism even with gloves on, and soft neck pad pivots to clear bandana knots and pony tails WarningsRead, 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. Type: Type 1 Application Class: Class E Hat Style: Full Brim Standards Compliance: ANSI Z89.1-2014, CSA Z94.1-15, EN397:2012+A1:2012-LD, EN12492:2012 Electrical Protection: Up to 20 kV Overall Length: 12.5 in (31.8 cm) Overall Width: 10.7 in (27.2 cm) Overall Height: 6.5 in (16.5 cm) Width: 10.5 in Height: 7 in Depth: 12 in Weight: 0.9 lbs Hat Size: 6.5 to 8 Shell Material: PC/ABS Shell Color: Blue Suspension: 6-point Suspension Design: Flexible open-frame Suspension Adjustment: Ratchet with Pivot (one-handed large knob) Venting: Non-Vented Shell Lining: Padded, sweat-wicking, odor resistant; machine washable Accessory Slots: Front, Back, and Both Sides Accessory Mounts: Patented front and back mounts Universal Accessory Slots: Both sides for hearing protection, face shield, and more Made In: USA with global components DownloadsSafety Data SheetSafety Sheet 1Spec SheetInstructionsHH-Gen2_revINSTRUCTIONS_WEB_f2.22.pdf