The Clariden Evo Pant W from La Sportiva is a light, elastic, breathable and durable pair of trousers that you can use on a mountain tour. They are reinforced at the knees and seat and the inside of the ankles feature particularly abrasion-resistant Schoeller Keprotec, which can also survive boots. The elastic waistband has an integrated belts and there are two bags with zips on the sides.