Koa Outdoor Sensory Play Market & Water WallTurn your backyard into a hands on discovery zone The Avenlur Koa Outdoor Sensory Play Market & Water Wall is built to bring active, hands on learning outside. Designed specifically for outdoor environments, Koa combines a water wall, sensory activity panel, and imaginative market stand into one beautifully crafted play system. Kids can pour, spin, tilt, and experiment with flowing water watching it move through funnels, ramps, and spinning wheels