Find your Size

Finding your Ring Protect size is simple—and no need to overthink it. Our rings are made from flexible silicone with a comfortable design, meaning they have plenty of give and will still fit comfortably even if you’re off by a size. We do recommend sizing up one size for smart rings. For the most accurate guide, head to our Instagram where you can use our 6.1-inch iPhone screen size tool by placing your ring on your phone and swiping to find your match. You can also measure the internal diameter of your ring and refer to the millimetre sizes below.