3M Maxim Indoor & Outdoor Glasses Scratch-resistant Adjustable Length Ventilated Ref 13227-00000M.- DX Coating to resist fogging, scratching & chemicals.- Dual-injected cushion browguard for extra comfort & shock absorption.- Soft, universal-fit nosebridge.- Adjustable length temples with pantoscopic system.- The spherical lens for 180? of pure vision & superior eye coverage.- Ventilation channel across the lens to minimise misting.