Advance X TREEm Chainsaw Trousers Type A Choose Waist Size:S certified to EN 381 5 Class certified to EN 381 5 Class 1 (20 m s) Design C and Hi Vis compliant to EN ISO 20471 RIS 3279 TOM The Arbortec ATHV4050 Breatheflex Chainsaw Trousers are professional Design C Class 1 chainsaw trousers engineered specifically for arborists and forestry professionals working within the UK rail industry and the X TREEm's AVERTIC Pro Lite construction genuinely reduces fatigue over a working day compared to traditional chainsaw trousers — lighter cut protection material paired with ProElast stretch inserts means Class 1 certification without the usual weight and stiffness trade off and reflective strips with high visibility orange panels increase visibility in woodland environments