Invigorate is a palm size personal massager with an arched shape and a smooth satin finish. Hold the bottom and twist the top to ignite a single yet exhilarating speed runs on 1 AA battery (not included). Invigorate is waterproof for aquatic escapades in the shower bath or hot tub. Made from non-toxic ABS plastic Invigorate is also non-porous making it safe to use with water-based silicone based and hybrid lubricants. Cleverly curved for maximum g-spot pleasure Invigorate the special lady in your life.