The STIHL FUNCTION Basic Helmet Set is a lightweight safety helmet with large nylon visor and low profile ear muffs. Perfect for a huge range of applications, this helmet set is ideal for those with a 53-66cm head circumference. The large nylon visor at the front, which can be raised and lowered, is perfect in situations where cuttings and debris maybe flying around. The visor will also act as a protection against glare on bright, reflective surfaces. The low profile ear muffs provide good sound protection against loud machines. Vents in the upper part of the helmet ensure good ventilation to keep your head cool on warmer days. However, if it does it warm, a built in sweatband made from functional material will ensure that you can keep working without interference from sweat. Thanks to the way the helmet has been designed, should you find yourself working in the rain, water will be deflected away from the front thanks to a unique rain channel. Complies with EN 352, EN 397, EN 1731 SNR 24 H29 M 26 L 19 up to 104 dBA