Our current plan is to create one or two ring sizes (e.g. small and large) and provide user-changeable interior pieces to adjust the ring's shank (similar concept as the Bluetooth ear pieces). This way a perfect fit can be made.
Once the project is funded and we are close to finalizing orders, you'll be receiving a survey email where you can specify your preferred color. To ensure a timely delivery, if you do not specify a color, the black SmartRing will be shipped.