Past Season. Rugged Trekking Trouser The men's Vidda Pro Trousers are rugged trekking trouser, designed for all day comfort and long-lasting durability. Fjällräven constructed these pants with their signature wind and water-resistant G-1000 fabric, with a double layering over the rear and knees for enhanced durability. The regular fitting Vidda Pro also has a adaptable mid waist and pre-shaped knees to help improve mobility on steeper pursuits. The pant has six total pockets, including a map pocket that secures with a button flap, a knife pocket, and knee pad pockets. The leg endings can be adjusted with elastic straps and press buttons.