HUJ ring is a c-ring or a ball-ring, some guys stack them for more stretch or for more grip. HUJ c-ring has a groove inside the ring that flattens out when worn, this keeps the ring in place and keeps a bit of lube between the ring and the wearer for comfort. The plus+silicone™ TPR/silicone blend: silicone for a smooth and warm feel, TPR for amazing stretch and strength. Phthalate free.

Dimensions:
Width: 2 in.
Height: 2 in.
Depth: .75 in.
Outer Circumference: 6 in.
Inner Circumference: 3 in.