Product Details FREE & discreet shipping in the USA for orders over $30! SIZE #4 DIMENSIONS: LENGTH: 9 inch (229mm) DIAMETER: 1-1/2 inch (38mm) CIRCUMFERENCE: 4.7 inch (119mm) Soul Source GRS trainers have been developed in conjunction with a leading surgeon to help transgender women. Our GRS pelvic trainers are recommended by surgeons throughout the world. These trainers are made of rigid medical-grade silicone, being stable from -50 degrees to +340 degrees Fahrenheit. They may be chilled or used at room temperature. Available in 6 sizes, GRS pelvic trainers can be purchased individually. All orders include a complimentary storage pouch. We recommend lubricating the trainer before insertion. Use ONLY a water-based lubricant. Silicone lubricants can damage the trainer. Always consult your physician regarding the use of pelvic trainers. We strongly recommend that you use a high-quality lubricant with our trainers. You can find these in our Women's Health Products collection. Soul Source strainers are tapered; trainer diameters do not exceed the stated dimensions. For circumferences, please see our Frequently Asked Questions. The information in this website is about a technical device, pelvic trainers. This information should not be used during any medical emergency, or for the diagnosis of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions.