The STIHL 00883420160 ADVANCE X-FLEX XL Safety Pants are extremely lightweight and highly breathable chainsaw protective trousers, specifically designed for professional arborists and forestry workers. Featuring Class 1 (20 m/s) cut protection, these pants are constructed with an elastic and breathable AVERTIC™ dura outer fabric for enhanced comfort and mobility. They include thorn protection, waterproof knee and lower leg protection, kidney protection, practical ventilation zippers, and reflective details for increased visibility. The pants incorporate 6 layers of advanced cut protection material, ensuring robust safety and durability in demanding work environments.