Spectrum helemts one of our pioneering head protection systems with integrated over spectacles to deliver grade B medium energy EN 166 impact protection. Also suitable for wearers of prescription eyewear. Eyewear provides extra lateral and bottom coverage and provides extra protection against particles Anti-scratch and anti-mist coating on eyewear provides improved durability and visibility Soft nose bridge for enhanced wearer comfort Full adjustment built in to ensure the user can obtain a perfect fit The largest front logo area of any industrial safety helmet! Helmet approved to EN 397: 1000V a.c - unvented shell only, LD, MM, -40C EN 50365. ANSI/ISEA Z89.1-2009 Type 1 Class C LT (Class E - unvented shell only), tested to CAN/CSA-Z94.1-05 (unvented only). Over Spectacles approved to : EN 166: 1 B T, EN 170 2C-1,2, ANSI/ISEA Z87.1-2010 Z87+, tested to CAN/CSA-Z94.3-07. 484g Shell: Acrylonitrile-Butadiene-Styrene (ABS) Reduced 20mm S20*R (Non Vented Ratchet), S20*RF (Vented Ratchet) S576 (spare Over Spectacles) * Insert colour of helmet (i.e. W for White). S30HIRS Silver High Intensity Reflective Stickers 6 point sewn, durable and hardwearing Terylene Webbing Cradle with Twist2Fit wheel Ratchet, complete with Dry-Tech Sweatband. Colour Variations: White Blue Light Blue Red Yellow Orange Green Grey Black Hi-vis Yellow Hi-vis orange