I received a set of five hypoallergenic silicone rings from Steadfast Products. They came in sizes 8, 9, 10, 11, and 12, and currently sell for $10.99 on Amazon. If you are buying silicone rings for multiple people – or if you want to keep one ring for yourself and give the others to friends – this set is a really good deal. Some people’s fingers are also in between two ring sizes, so they could find the best fit among this package. This product is great for married men who are looking for “high performance” rings to wear in situations that require flexible, non-conductive rings. Steadfasts’ rings are waterproof and made of medical grade silicone. You can find them here on Amazon.