Ключевые слова: abstract, activity, artificial, background, beautiful, blue, children, close, closeup, color, competition, cover, crumb, design, exercise, field, flexible, floor, flooring, granules, green, ground, manufacturing, material, mulch, outdoor, park, pattern, play, playground, recreation, recycled, red, road, rubber, safe, safety, soft, space, sport, stadium, start, surface, texture, textured, tile, tires, track, wallpaper, yellow,