Penis rings :: provide strong and long-term erection. Men with short-term or incomplete erection use such rings to prolong sex. Due to thick girth and prevention of blood flow penis rings, used with penis pumps, keep the penis firm and flexible. They can be of any material and form. Some erection rings have small nubs that tickle and irritate the clitoris, bringing the continuous stimulation to a woman. The rings are stretched and put on the head or on the base of the erect penis. To eliminate the effect of sliding you need to put the ring on dry penis, and then use some lubricant to avoid the discomfort. Don't wear it more than 1,5 hour.
Water based lubricants are :: available in every possible consistency, from thin as water to thick as pudding. Thick water-based lubricants can be better for anal play and easier for playing with sex toys. It is possible that a thicker water-based lubricant creates an extra cushion of comfort for anal play, and certainly true that it's easier to use with sex toys as it stays on better than a thin lubricant will. Some people find thinner lubricants are cleaner and less noticeable. You may also want to consider how the lubricant feels when it dries. Most water-based lubricants will feel a bit tacky when they dry up. There are a few non-tacky products that are less sticky when they dry. Water-based lubricants are recommended by doctors and health care workers.
Interesting :: Even in Ancient China people used different sex toys. The most famous were special penis rings. They were made of silver or ivory with nipples, hooks or crests. Such ring, put on the penis base, protected from early ejaculation and supported the erection, preventing the blood outflow. Due to small hooks or nipples woman's clitoris or anus also got the stimulation. Such penis rings were covered with fine patterns and carving, that became a kind of decorative and applied arts. Most often Chinese carvers used such traditional item: a dragon playing with pearl. Dragons' shells moved apart large vulvar lips, while the pearl stimulated the clitoris. The interlaced dragons' tails symbolized two progenitors - Fu-Si and Niui-Vi, an example of strong unity Yin Yan. In the middle of interlaced tails there was a ring with small hole. A man tided round with the strong string threaded in it, to fix the ring and to prevent from unpleasant surprises.