Hidden Dreams can you keep a secret? Sexy, lacy, stretch-to-fit, comfortable panty designed with a hidden pocket for the powerful, quiet, waterproof micro-stimulator. Batteries included (2 watch, 4 included.) 90% Nylon, 10% Spandex (panty), ABS (micro-stimulator.) 1.5x .5/ 4 cm x 1 cm (stimulator.)