The Allegro Nova 3 series respirator combines breakthrough protection technology with advanced comfort and functionality surpassing even the most rigorous industry standards. Designed to optimize safety and productivity as well to minimize worker downtime, the helmet has a host of features that maximize it's lifetime value. 3 sizes of padding allows helmets to be individually customized. Helmets weight is distributed evenly across the head and shoulders for optimum comfort, practicality, and ease of worker movement, reducing fatigue. In addition, a ratchet-adjusted neck pad ensures your head is supported. The padding helps absorb sound within the helmet, protecting workers' hearing. Easily removable and fully machine washable, making helmets hygienic and pleasant to wear even in the most extreme temperatures. Lens tear-offs with pre-folded, easy to grip tab allows workers to quickly and easily tear off just one lens at a time. Mask allows for multiple, layered lens tear-offs to be inserted at once. Replaceable inner lens system. 3 simple steps: (a) unclip the lens frame, (b) remove the old lens and replace with a new lens, (c) clip the frame back into place. All done in under 10 seconds! Unbreakable/Durable super-protective helemt shell - high pressure injection molded from engineering grade Nylon. Larger viewing window, large, lens snap-shut latch, and securely attached cape. The cape is secured with 8 snap fasteners, ensuring it won't drop off and is easy to replace.