The San Mateo Play System is four fun fitness activities all rolled into one. Each of them is focused on improving strength and muscle definition in the arm and core muscles while being entertaining enough to hold kids' interests.

It has four different styles of overhead climbers, which each end on the same central square platform. This way, children can fluidly move from one to the next, or race each other to the center. It has a traditional Overhead Straight Rung Horizontal Ladder with a classic design that kids will instantly recognize. It also features an Overhead Double Parallel Bar Ladder, which is an exciting new version including two long bars that kids can hang off of underneath, rather than the separate rungs of an ordinary Horizontal Ladder. Lastly, there are two Overhead Swinging Ring Ladders: one with a straight shape, and one with a 90-degree turn.