Dr. Joel Kaplan Silicone Prostate Probe Graduated shaft. Ergonomically curved to enhance prostate stimulation. Durable, pliable, premium quality Silicone. Sturdy suction cup base. Safe and pure for body and pleasure. Made using phthalate free, non-toxic materials: Silicone. Probe measures 4 inches long by 1.25 inches wide. Bulk weight 2.3 ounces. Always clean before and after use. A water based lubricant is recommended.