100% platinum cured medical grade silicone. 3.5" insertable inch (9 cm) angled tip for prostate massages. Insert toy and rock gently on large swirl. Firm but flexible translucent shaft. Small swirl hits the perineum, large swirl is a handle. Silicone can be boiled, frozen, microwaved or placed on the top rack of the dishwasher. Silicone s soft texture becomes slick when lubricated. Silicone is durable, nonporous and hygienic. Waterproof, Phthalate free