Using this Happy Rabbit Branded Adjustable Vibrating Strap-On Harness Set is easy. First, adjust the harness to fit your waist (it can fit up to 67 inches). Then, choose the appropriate O-ring for your dildo and attach it to the harness. You can use the rabbit vibrator either attached to the harness or independently. Turn on the vibrator and select from the 15 vibration modes, 3 speeds, and 9 patterns. For the external ears, there are 3 rumbly speeds for extra stimulation. Remember to apply water-based lube on the shaft and ears for a smoother feeling. When you're done, clean the silicone parts with mild soap and warm water. Make sure it's completely dry before storing. Keep it in a cool, dry place. And don't forget to use the travel lock when you're on the go to avoid accidental activation.