Wood Swing Set Blueprints Type Of Wood For A Swing Set?

Type of wood for a Swing Set? - wood swing set blueprints

I'm going to buy a wooden swing, but I'm on what to buy a good type of wood too puzzled. ToysRus have business cycle fluctuations and have the same appearance as the Costco / 's are BJ's almost double the price. Is this the kind of wood? What type of wood should be us for a long life and low chips?