27’ Party Slip N Splash. This Commercial Grade Inflatable Water Slide is great for birthday parties, events, recreation centers and more. This can be attached to the 20' Rainbow XTreme Inflatable Water Slide for a combo price of only $650. Add both to your cart and the price will be adjusted after you place your order. 27Lx08Wx07H We set up the day of your party and pick up thee following day.