Silicone is a family of elastomer (elastic polymer) materials which can range from solid, flexible plastic to gel and liquid forms.
Silicone is noted for its retention of flexibility, resilience, and tensile strength at a wide temperature range. Unlike rubber and latex based products, which have similar elasticity, silicone is much more heat resistant and not destroyed by oils. It is non-toxic, not bio-degradable and used in a wide range of applications ranging from machinery to sealants and household items such as cooking spatulas, doughscrapers or baking moulds.
Silicone is also used in body implants (e.g. breast implants) and in sex toys such as dildos, vibrators, or butt plugs due to its durability, good cleanability and suitability for people with latex allergies. There are also silicone-based lubricants, however, they should not be used with a sex toy made of silicone since the toy may be corrupted by the lubricant. Some condoms (most made of latex) are pre-lubricated with silicone-based lubricants, thus, be careful when using a condom to cover/wrap a sex toy.