This product is made of crystal TPE material which is very glassy in looking and washable also.
This is a product thats like a condom but not thin it has some thickness to adjust your penis size and diameter .
Length of this product is generally 4 inches but length is not matter for this product because it is made by stretchable rubber which is stretching up to your penis size , and this has sensational ribbed for better sensation of your partner.
It has vibration option also with two different vibrators in two different place one of them is vibrateing on your penis tip and other is vibrating on the clitoris of your partner.
So just imagine what is the interest of this product.