The 10-Function Silicone Love Rider Double Riders, from Cal Exotics, is an accessory for the complete strap-on system. It is a premium, solid, sturdy, unscented Silicone dual probe. Flexes and moves with you. 10 powerful functions of vibration, pulsation, and escalation. Instant off button with LED light. State-of-the-art controller with memory chip that resumes last function used. Auto on/off button. Flanged base for use with most harnesses. Superior suction cup base for versatile use with or without harness. Silicone (probe) ABS (controller) Phthalate-Free PVC (cord). 5.5 x 1.5/14 cm x 3.75 cm (shaft). 5 x 0.75/12.75 cm x 2 cm (probe). Uses 2 AA batteries, not included.