KidWise makes a swing set called the Monkey Playsystem  and this swing set made from maintenance free lumber. These KidWise Playsets are built strong as well as, there is one thing all those swing sets have in common – safety and durability. While their Monkey Playsystem #1 is perfect for a smaller yard, their Monkey Playsystem #4 is great for the larger yard and has three forts. However, their swing sets are more for the customer who wants maintenance free play-sets with the lumber encased in a plastic sleeve, so they don’t have to complete annual sanding and water sealing.