The STIHL FUNCTION Basic helmet set is an entry-level model for private and occasional users. The helmet is equipped with a durable nylon mesh. Thanks to the openings that provide good ventilation for the helmet, wearing comfort is high. To use the helmet even in the rain, you can equip it with rain protection, which is optionally available. The STIHL FUNCTION Basic helmet set comes with hearing protection with an attenuation rating of SNR 27 and a 6-point harness that allows you to easily adjust the STIHL helmet to your head. The light transmission of the visor is 55%. This helmet set is equipped with a rain groove. Special featuresHelmet shell material: HPDE Sweatband material: functional material Hearing protection: SNR 27 (H: 29, M: 26, L: 19) Safety requirements: EN 352, EN 397, EN 1731 Technical specificationsInsulation value: 27 dB H-value: 29 dB M-value: 26 dB L-value: 19 dB Harness: 6-point Light transmission: 55