wire cables covered with small plastic buoys or floats that separate each lane. In a short course pool, the floats will change color at the 15 meter (49 foot) mark. In a long course pool, they will change color at the 25 meter (82 foot) mark. If the floats did not change color for that entire stretch, the distances may be marked by single float or a different color.It should be 2.5 meters ( 8.2 feet) wide, although this varies quite a bit from pool to pool.