This accessory is designed to be very easy to use. Simply put around your neck and attach the plastic loop to the tip of your chosen Bathmate Hydropump. Once secure you can change the length of the strap to your own requirements. This is important, as it will ensure total comfort when using the device. Then you are ready to go, and may commence pumping as per your devices instructions. It’s suitable for use with all Bathmate Hydropumps.