Norbert's Athletic Products Sectional Balance Beam Each 6' long x 4" high practice beam is covered with beam suede and filled with solid (but very light weight) crosslink foam. 6" wide base tapers to a 4" wide top surface. Connectible sectional beams are fun to use, quickly configurable and easy to store. Beams connect end-to-end securely with permanently attached velcro fastener.