AAI Classic Balance BeamThe CLASSIC line is ideal for schools, gymnastics clubs and training facilities. There are 2 styles available in the CLASSIC line: Reflex Adjustable (RA), Reflex Non Adjustable (RNA) Meets specifications for USAG, NCAA and NFHS competitions Top surface has a 1 4 (6 mm) thick layer of sponge foam and a 1 4 (6 mm) layer of neoprene rubber A durable, suede like, slip resistant material covers the beam and is designed to provide stability to the athlete