Also recommended by physicians in conjunction with Viagra TM and Injection Therapy. Reusable, easy to use. Applies in seconds. Lifetime warranty. The Encore ImpoAid Comfort Rings can be used to maintain a rigid erection longer or to simply create a more rigid erection. The ImpoAid can also be used with other methods of impotence treatment. Doctors recommend this as the first step. It is safe, easy to use and inexpensive. No prescription required. The ImpoAid Ring Kit is perfect for those with a mild case of impotence or desire to enhance sexual performance. Many physicians recommend the ImpoAid Kit for use with viagra or injection therapy. The ImpoAid Comfort Rings easily slide over the penis for a comfortable fit. These rings are so affordable many customers purchase them as replacement rings for competitors systems.