black and light blue shock,absorbing rubber crumb coating. color grainy background texture. soft coating for recycled rubber

absorbing abstract activity antislip artificial athletic backdrop background black blue coating color cover crumb crumbed design empty field floor grain grainy ground grounds impact light material outdoor pattern pavement playground playgrounds racetrack recycled road rubber rubberized safety shock shockabsorbing sidewalk soft space speckles sport sports stadium surface texture textured track treadmill wallpaper