Benches are available as fixed in-floor models or as stand-alone wide-base portables, but these benches do not have a backrest. Bison benches have your choice of 100% welded aluminum or steel support structure. Steel structures have a silver and grey powder coated finish. Planks have end caps for a finished look without sharp edges. Fixed models require a 30-inch concrete base to install on the floor for a durable, safe, and weather-resistant seat. Portable models are built to provide a near-tip-proof bench to transfer from the football field to football, baseball or softball fields as the seasons change. Portable benches can be used with or without provided rubber feet, can be anchored to the ground or bolted to court surfaces.