Ключевые слова: 1015 years, active, activity, bicycle, bike, biker, bmx, boy, caucasian, child, clothes, clothing, cycle, equipment, extreme, helmet, hobby, isolated, isolated on white, kid, kneepad, leisure, lifestyle, look, looking, looking at camera, male, practice, protect, protection, recreation, side view, smile, smiling, sport, sportsman, sportswear, stand, standing, teen, wheel, wheels, white background, young, youth, youth culture,