The other :: also well-known variant is penis rings. They are designed for men with insufficient or fast-falling erection. The ring is put on the penis at the moment of maximum erection. The penis keeps its firmness and flexibility due to thick grasp and prevention of blood outflow. Usually such kinds of erection keepers are made of latex or silicon. Can be in the form of loop. You need to begin the selection of such ring from the biggest size – rings shouldn't be thicker than it's necessary for penis firmness. Don't wear the rings longer than 30 minutes. If you like to use it longer, you need to make small pauses to restore normal blood circulation.
Needless to say that :: silicone based lubricants cannot be used with silicone sex toys. As for 100% silicone sex toys, you will not face with such problems unless it is not 100% silicone. It is also fine to use silicone-based lubricants with condoms of just about any kind. You have to be sure that it is made from 100% silicone elsewise it may destroy the sex toy and break it down. Using silicone-based lubricant with latex toy, make sure to double-check the information about the product and sure it is safe to use with latex. Apply the silicone-based lubricant in small amounts, spreading it around slightly until the needed lubrication is achieved.
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.