The Lumo LED Cockring from Oxballs is the first cockring that is designed to glow while you plow some hole. Made from our signature FLEX-TPR so it's thick and blubbery but stretchy enough to fit even monster sized dongs. Lumo comes with a silicone coated waterproof LED that easily slips into a discrete hollow compartment at the base of the ring. Once turned on the light refracts from the FLEW-TPR and lights up your best features. Perfect for fuck parties of go-go boys. Batteries included. Height: 3"/ 7.62 cm. Inside Circumference: 4"/ 10.26 cm. Outside Circumference: 9.5"/ 24.13 cm. Weight: 2.2 oz.