The perfect marriage between beauty and comfort. MFIT Comfort Technology is a patented technology that lines the interior of a ring. Grooves within the precious metal create spaces that let air pass through between the ring and finger; allowing the skin to breath and minimal swelling. The design choices and combinations for MFIT rings are truly endless, from yellow, rose, white, and black gold, to platinum, to black diamonds - the list goes on and on…. Mfit Comfort Technology was created for men, but today is also available for women on all the My Caroline rings. Mfit rings are forever rings you will happily wear forever.