There are many reasons that silicone is so popular for sex toys. For one it
feels fantastic and comes in a mulitude of shapes and sizes. It's durable and
non-porous, it can be boiled for five to ten minutes or placed on the top rack
of your dishwasher (so long as there isn't a vibrating unit inside). However, a
sudsy soap and water bath will do the trick, too.
It is a great choice for anyone with latex allergies or if you are concerned
about having any type of reaction, silicone is a safe choice.
You can easily warm it, it retains body heat very well and is amazing when
vibration is added. That's one of the main reasons it makes is a superior choice
for anal, vaginal, clitoral or g-spot play when vibration is the sensation you
desire.
One of the only things you have to worry about when it comes to silicone is to
use only a water based lube. Siicone based lube can break down the toy,
causing it to turn gummy and un-useable. If you have to use silicone lube,
cover your toy with a condom.