STIHL ADVANCE FlexTEC Chainsaw Trousers Type C – Professional Arborist PPE Engineered for the demands of UK forestry, arboriculture and landscaping, the STIHL ADVANCE FlexTEC Trousers (Class 1, Design C) are a premium choice for serious professionals. These cut-protection trousers offer an unparalleled combination of comfort, durability, breathability and freedom of movement, making them one of STIHL's most capable trousers for demanding, physical work. The slim-fit design gives a sleek, professional look that reduces snagging and weight versus a looser cut. The lower leg features an elasticated cuff for a close fit, helping to keep out ticks, sawdust and snow, alongside robust thorn and abrasion resistance. The knee area is reinforced with durable, waterproof elastic fabric, while a flexible ProElast insert in the crotch, with its elasticated connection, gives greater freedom of movement during demanding tasks like tree climbing and limb removal. STIHL's lightweight AVERTIC™ Pro lite+ cut-protection material is exclusively developed for professional STIHL PPE, elastically bonded to the outer fabric for superior mobility and comfort through a full working day. Constructed from a highly breathable material, these trousers help keep you cool during intense work, with ventilation zips on the thigh for temperature regulation in warmer conditions. Integrated chainsaw cut-protection offers essential safety, while the added kidney protection keeps you warm in cold temperatures and provides extra defence against scratches and impact to the lower back — particularly valuable in challenging terrain or during stump grinding. The inner lining and thigh material are crafted from 100% recycled polyester, and a PFAS-free water-repellent finish on the lower leg areas adds protection against moisture. Large reflective silver stripes and neon green accents on the pocket improve visibility on site. Buttons and loops on the waistband allow STIHL braces to be attached, with quick, secure Velcro waist adjustment. The high proportion of elasticated material makes the trousers unisex and equally suitable for male and female wearers, with two side pockets, a back pocket, a thigh pocket and a ruler pocket for tools, gloves and accessories — all fitted with flat zip closures to prevent resin build-up. Key Features Class 1, Design C cut-protection trousers, slim-fit AVERTIC™ Pro lite+ cut-protection material, exclusive to STIHL professional PPE ProElast crotch insert for greater freedom of movement Reinforced, waterproof elastic knee panels Elasticated ankle cuffs against ticks, sawdust and snow Thigh ventilation zips and highly breathable construction Integrated kidney protection against cold and impact 100% recycled polyester lining and thigh material PFAS-free water-repellent finish on the lower leg Reflective silver stripes and neon green pocket accents Five pockets with flat zip closures to prevent resin build-up Unisex fit with Velcro waist adjustment and STIHL brace attachment points Certification Explained These trousers are Class 1 rated, meaning they are tested and certified to protect against a chainsaw chain speed of 20 m/s — the standard protection level for most professional chainsaw work. Design C denotes the cut-protection area covers the front and both sides of the legs. Why Choose the ADVANCE FlexTEC? The AVERTIC™ Pro lite+ material is what genuinely sets these apart — it's elastically bonded to the outer fabric rather than sitting as a rigid insert, which is why the FlexTEC range moves with the body noticeably more than standard cut-protection trousers. For professionals working full days in the trees, that difference in mobility over a Class 1-rated Design C trouser is a real practical advantage. Pairs Well With Shop Chainsaw Boots Shop Chainsaw Helmets Shop Protective Gloves Also Known As Also searched for as: STIHL FlexTEC trousers, ADVANCE chainsaw trousers Design C, STIHL Class 1 cut-protection trousers, AVERTIC Pro lite trousers. FAQs What does Class 1 mean?Class 1 certifies protection against a chainsaw chain speed of 20 m/s, the standard protection level for most professional chainsaw work. What is AVERTIC™ Pro lite+?A lightweight cut-protection material developed exclusively for professional STIHL PPE, elastically bonded to the outer fabric for superior mobility. Are these trousers waterproof?The knee panels use waterproof elastic fabric and the lower leg has a PFAS-free water-repellent finish, though the trousers are not fully waterproof overall. Do they run unisex?Yes, the high proportion of elasticated material makes them equally suitable for male and female wearers. How many pockets do they have?Five: two side pockets, a back pocket, a thigh pocket and a ruler pocket, all with flat zip closures to prevent resin build-up.
