The JSP EVO ALTA SkyWorker Vented Helmet delivers all-round impact protection from falling objects while working on site. The helmet, designed with a mountaineering-style, feature a specialist shell structure along with a internal liner to increase both durability as well as shock absorption performance. For additional comfort, the helmet offers precise adjustment settings thanks to a 4-point chinstrap, to get a secure fit so that it remains stable on site. Certified to EN 12492, the helmet provides impact protection from the top, side, front and rear with shock absorption performance. An extended nape section protects the neck. To keep you cool during the work day, the helmet features side and rear ventilation which helps reduce temperature by an average 2-3degrees. The internal impact liner provides additional sock absorption as well as penetration protection. Made with expanded polypropylene EPP, the liner is lightweight and ventilated for comfort. The Revolution Flex wheel ratchet harness secures the helmet, eliminating pressure points to provide maximum comfort. Fitted with a replaceable Chamlon cotton sweatband and fully compatible with EVO cooling sweatbands for protection against heat stress. The 4-point chinstrap is easy to adjust on the head. Size and anchorage point adjustment enable a tailored fit for different head sizes, ensuring stability and greater comfort.