Get two intense workouts from one set with the Sit-Up/Back Extension Outdoor Gym Equipment! One side features a sit-up station with a leg-holding bar and contoured backrest. The backrest for this outdoor fitness equipment is perforated so rainwater can drain quickly following a storm. On the other side is a back extension with padded back support. It acts similarly to a sit-up, but the individual remains in a standing position. This fitness park equipment is a great strength and endurance workout for the lower back and core muscles. A great addition to any fitness park or outdoor gym!