The red Epic Hard On Ring Kit by Sport Fucker will have you at attention in no time. This pure silicone ring kit contains two sizes of rings, so there will be no worries about what size you may need - they are both good sizes anyway because of their unique oval shape. The design is made to keep you super hard at all times. Made from 100% pure silicone, each kit includes two sizes (35mm and 40mm) of oval shape rings.