Warm the area with a warm cloth prior to using a pump. Wash the pump before and after use and apply lots of thick water-based lubricant to the area to help form a seal. The Precision Pump and Erection Enhancer System is the natural evolution of enhancement techniques that combines creating and maintaining an erection. Pump it up and keep it up with this precision measurement system and erection ring that fits on the base of the pump. Slip the ring onto the base of the penis when an erection is produced. Easy-grip handles on a ring for easy removal. If you do not have a thick water-based lubricant please purchase Sutil Rich or Probe Thick lubricant as they work well