Product Details Soul Source silicone trainers were created by a sex therapist and gynecologist. Most women will begin with the largest size silicone trainer that feels comfortable. Soul Source vaginal trainers are made of latex-free BPA-free medical-grade silicone which makes them smooth and resilient. Our trainers are non-sticky, able to retain body heat and easy to care for. They feel comfortable, with a texture that resembles body tissue, being stable from -50 degrees to +340 degrees Fahrenheit. Our quality trainers may be chilled, used at room temperature or warmed. They are available in 8 sizes and can be purchased individually, or in pre-packaged sets. Dimensions for each size are length and diameter. Soul Source silicone trainers are tapered; trainer diameters do not exceed the stated dimensions. For circumferences, please see our Frequently Asked Questions. We recommend that women consult with a qualified health professional specializing in pelvic floor disorders for the most effective physical therapeutic benefit. The information in this website is about a technical device, vaginal 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.