The independent scrotum rings of the Silicone Ball Spreader provide added support and stamina. This erection enhancer is made from stretchy, comfortable Silicone that's body-safe, unscented and phthalate free. 

1.25/3.25 cm (penis ring diameter) 
1/2.5 cm (scrotum rings diameter) 
4 x 2.5/10.25 cm x 6.25 cm (overall)