Magic Eyes elastic lasting ring has two sets of rings in one box. The A-ring consists of a large ring and a small ring. The two overlapping rings, one for the testicles and one for the penis, allow you to reach your full potential. The B-ring is composed of three rings connected in a straight line, arranged from small to large. The B-ring can further entrap the roots of the penis and testicles, making you more durable and more stimulating.