Want to try out your size at the comfort of your home? - Purchase your Sizing Kit here Product non-exchangeable if product is already unsealed and incorrect size is purchased A comfortable and sleek smart ring that tracks your sleep, movement and recovery trends, nudging you to make healthier choices every day. 2.4 gms light. 11x lighter than a typical smartwatch. 2.4 mm sleek. Discreet design for everyday use.