The BIG-D cock ring is a thick, super-soft, rubbery flex TPR ring that's big enough to encircle your cock and balls and squeeze everything you've got up and out to see and feel the biggest "D".... but BIG-D also has gripping rings on the top that squeeze the base of your shaft for an even bigger, harder extra "D". Width: 5 cm / Depth: 3-4 cm / Outer circumference: 20 cm / Inner diameter: 4-5 cm / Product weight: 0.042 kg / Material: Flex-TPR