This product is a Phimosis stretcher rings kit for individuals who have Phimosis. The kit contains 20 rings with different diameters starting from 3 mms to 38 mms. Use the appropriate ring size to start based on your phimotic band diameter. All the ring sizes are labelled which would help you track your progress. With time you can move up the ring sizes and continue the usage as usual. All you need is consistency. Do not wear rings for too long. You can use the rings daily for 30 mins. Make sure to use Coconut oil as lubricant before using the rings.