backpack, nylon, grey, mountains, active, hikers, path, walk, person, leisure, sports, hiking, hiker, fog, mountain, track, nature, hike, polymer, haversack, pedestrian, someone, traveler, sport, time off, cloud, bag, way of life, exercise, fiber, gray, workout, diversion, knapsack, polyamide, course, work, magnitude, aerosol, man-made fiber