Made of silicone material, it is sleek and comfortable to wear. It is worn around and stimulates cavernous body. Easy to wear and effectively performance of . It will prolong the time of to improve the quality of life. Feature - Color: Black. - Material: Silica gel. - Size: 4.5x4.5x1cm. - Made of premium silicone material, it is smooth and comfortable to wear. - Help to last much longer so that you can have more . - Restrict the flow of blood from the for producing a stronger . - Please keep use. - Warm Tip: Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package list: 1 x Silicone Ring