Pump it up and keep it hard!
Dr. Joel Kaplan's Pump Erection Enhancer is a silicone constriction ring that is specially designed for use with his vacuum therapy pumps. The dual-handle design facilitates placement over a cylinder or hardened penis. It can be used to help maintain an erection after a pump session, and fits securely on the base of a pump cylinder, ready to slip over an erection.
This sex toy is compatible with water-based lubes. It is not recommended to be used with silicone lubes. After use, carefully wash the sex toy with mild soap and water or try a sex toy cleaner for even quicker cleanup. Store this sex toy separately from other sex toys.