Sensa-Firm is a variation of thermal plastic elastome. It is a rubber used to make sex toys such as vibrators, dildos, and butt plugs. Sensa-Firm is made to mimic actual human skin. It is extremely soft to the touch as well as being very porous. It is difficult to keep clean.
More About Sensa-Firm
The Sensa-Firm name is trademarked and only applied to a specific line of products. While known for their skin-like texture, these toys are also famously hard to maintain. Often sold with a proprietary "renewing" powder, the toys require "dusting" after each washing to restore their signature finish. The toys also should be stored in individual bags because they absorb anything they come in contact with.
