Design your spa with ParaJets massage therapy spa jets (formally TwirlyByrd) to deliver a relaxing hydro-therapeutic massage. Choose between 4 interchangeable massage therapy jet faceplates; Deep Tissue, Shiatsu, Pulsating or Soft Stream to create a relaxing spa experience. The unique advantage of installing ParaJets is the universal housing that allows the ability to change or move the therapy jet faceplates to different stations in your spa with a simple twist. Choose different combinations for your legs, back and other muscle groups. The choice is yours to mix and match as you see fit. Five designer colors to match most interior finishes for new pool construction or for upgrading your existing pool.