The summer is coming fast and we’re about to enter the hottest days of the season. So before they get here, you owe it to yourself and your family to get the World’s Biggest Backyard Water Slide ($149). Don’t be a snob, you know you want one. This slide is a whopping 75ft long and 12 feet wide. It only takes 15 minutes to setup and your ready to go. The Wahii is constructed of thick specially formulated, UV protected plastic, and is rated to handle up to 256lbs per square foot. So if you have the space, this bad boy would be perfect for birthday parties, or just to cool down on the weekend.