Ключевые слова: action, activity, adventure, back, backpack, backside, bicycle, bicyclist, bike, biker, biking, boy, caucasian, childhood, city, cycle, fun, happy, healthy, jeans, kid, learn, leisure, lifestyle, male, nature, one, outdoor, outside, park, pedal, person, recreation, ride, road, safety, sport, street, summer, teen, teenager, town, transportation, travel, urban, wheel, white, young,