Cock-T is our most comfortable cock ring yet the simple. sleek design is a take on classic o-rings. Made in the USA. Lube safe water based recommended. hybrid. Cleaning detergent and hot water. dishwasher. diluted bleach. water solution from Oxballs. Color Black. Materials Pure Platinum Silicone. Stats aproximate inner circumference 4 inches. outer circumference 7.5 inches. thickness 1 inch.