FIND YOUR PERFECT FIT - Gabit Smart Ring sizes are unique and don’t match standard ring sizes. Start by ordering our Sizing Kit to ensure the perfect fit. Our rings come in sizes ranging from 6 to 13 TRY BEFORE YOU BUY - Use the Gabit Ring Sizing Kit to determine your accurate size. Wear the sizing ring for at least 24 hours to find the most comfortable fit. PICK THE RIGHT FINGER - For ideal comfort and enhanced sleep tracking, we recommend wearing your Gabit Ring on your index finger. To guarantee the best tracking accuracy and comfort, the ring should fit snugly but not rotate freely when you move it on your finger.