With the exception of Ring Pops, finger-based accessories are absolutely not one-size-fits-all. Anyone who has ever shopped for an engagement ring can tell you how stressful it can be guessing the width of a finger. To avoid shoppers spending $399 on a smart ring that doesn’t fit, Samsung offers a free sizing kit with each purchase of the new Samsung Galaxy Ring. Notably, the kit is only free from Samsung.com and select retailers; other stores may incur an additional cost.