The Klein Tools 60400 Hard Hat is non-vented with a full-brim style. It was designed and engineered for optimal safety, comfort and fit. The breathable, padded sweat-wicking sweatband and top pad improve comfort and are machine washable. The unique suspension system features a flexible open frame design to provide optimal fit and improved air circulation. The hard hat allows easy, one-handed adjustment with the large knob ratchet mechanism, even with gloves on. The soft neck pad pivots to clear bandana knots and pony tails. 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.