Product Details FREE & discreet shipping in the USA for orders over $35! DIMENSIONS: SIZE LENGTH DIAMETER CIRCUMFERENCE P2 9 in (229mm) 1 in (25mm) 3.1 in (79mm) 1 9 in (229mm) 1-1/8 in (29mm) 3.5 in (89mm) 2 9 in (229mm) 1-1/4 in (32mm) 3.9 in (99mm) 3 9 in (229mm) 1-3/8 in (35mm) 4.3 in (109mm) 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. Reapply lubricant every 10-15 minutes. Always consult your physician regarding the use of pelvic trainers. Stated dimensions for each size are length and diameter. Soul Source trainers 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.