** 3D Goggles or Suction and Return fittings are not included with replacement liner **This Summer Waves 3D ring pool will add a fun and exciting dimension to your summer vacation. Just put on a pair of "3D" Goggles and take a dip under water to discover a whole new world of aquatic friends! Vivid 3D aquarium graphics and durable 2-tier construction make this easy-to-set-up pool the Ultimate place to cool off all season. Just fill with water, and enjoy hours of splashing around while your imagination soars. Special 3D Goggles must be worn to see the images in 3D.Compatible with RP and RX filtration systems only!Before assembling your pool, it is recommended to leave the liner out in the sun for approximately two hours so it becomes warm and malleable enough to smooth out wrinkles and ease set up. This liner comes with a convenient quick release drain plug that has a standard garden hose connection.