Perfect for the "dog days" of summer! Simply hook your garden hose to the special attachment on the frame, and adjust the water pressure to the desired spray setting. Water will spray out of the dozens of holes inside the frame, forming a virtual "wall" of water your dog has to run through! It is a blast to watch, and it will become a favorite new obstacle for the backyard, doggie daycares, humane societies, and for agility fun matches! You can even order more than one to form a tunnel of water! Measures 30" around. Comes with easy assembly and training instructions.