BIG OX is a thick, blubbery c-ring designed to grip your penis and give you even more girth. It's made from Oxballs new PLUS +SILICONE so it has the strength and stretch of TPR but the warmth and softness of smooth silicone. Best of all, the super soft material makes for a comfortable fit and feel for hours. The thick, fleshy design rests snug behind your balls. If you're into ballstretching, BIG OX also doubles as a hefty ballring for some stretch on your sack.