This 6 piece c-ring set is perfect for those who knows what they wants. No useless functions or options, just a quality c-ring in 6 different sizes. The rings are made of odorless silicone that is completely body safe and is very durable. The rings feel soft and smooth and are stretchy, so they always fit perfectly and are comfortable to wear. Thanks to the flat design, the rings will stay in place and will not roll off during use. Clean the rings after use with water and toy cleaner.