BIG-D cockring is thick super-soft rubbery flexTPR big enough to wrap around your cock and balls and push all you got up and out for the biggest âDâ look and feelâŠbut BIG-D also has gripper flanges on top that squeeze the base of your shaft for even bigger harder extra D. BIG-D is oval shaped for better ergo fit, and its got extra padding on the back under your taint for more push-up and push-outâŠthe base of this ring curves in for a bit extra squeeze at the bottom of your nuts and shaft, more squeeze means more bone. HOW TO: a bit of spit or lube is good, stretch ring and tuck your cock and balls through with top shaft-grippers aiming forward on top of your dick. Play hard. Made of our stretchy flexTPR, itâll keep the grip firm enough with a rubbery comfortable stretch, and the right grip where you want it. Oxballs designs all our gear with the features that make our toys work--our gear works hard, feels lush and rubbery and fits your need. Our goal is making your play bigger harder better.