SPROCKET cockring is made from all new material, it feels “blubbery”...squishy...but elastic enough to squeeze your junk and keep you super-hard—it will not dig into your flesh like other cockrings. Lube safe: water-base, oil base, water/silicone hybrid, silicone lubes. Cleaning: detergent and warm water after use. From Oxballs. Color: Black Materials: SOFLEX TPR Total Height: 1.75in./ 4.45 cm Inside Circumference: 2.75in./ 6.99 cm Outside Circumference: 5.75 in. / 14.61 cm