DeVice Aneros. The Aneros Device is the first prostate massager made of solid silicone. This toy measures 4.75 inches in length and promises all the luxury, comfort and pleasure you’ve come to expect from the Aneros brand. This male prostate massager has a hands free design. The curved shaft is made from super smooth silicone with a luxurious velvet finish. This toy has a tip width of 1.2 inches and the simple but satisfying design makes this a romp regular.