Walmart has this super fun Infans Inflatable Water Slide Castle Kids Bounce House w/ Octopus Style & 750W Blower for only $369.99 Shipped! (Reg. $460) Our children’s inflatable water park is made of durable, non-toxic Oxford material, and is safe and reliable to provide continuous joy and companionship to children through their childhood. Including two slides, a pool, a climbing wall, a basket, and a water cannon, your child can not only enjoy multiple play areas, but also exercise and make more friends. Best of all, setup is easy; Just attach it to a simple garden hose and you have your very own backyard water slide.