Self-lubricating pocket stroker. Add a little water or saliva to activate temporary self-lubricating properties (up to ~12 uses). Squeeze the cup and adjust the air valve for more suction and pleasure. To clean, wash with soap and water, pat dry, and air dry before storing. Use water-based lubricants (recommended once self-lubricating effect diminishes). Measures approx. 7.25 in length by 3.25 in width.