Mystim Egg-cellent Egon Lustegg. This small lustegg is especially delightful, due to the fact that it allows a very deep penetration. Still its weight and measures are compact enough to allow a halt in the vagina, even if the user is moving or walking around. Length: approx. 5.3 cm. Diameter: approx. 3.0 cm. Material: hand polished medical aluminum. You will require an e-stim device - like the Mystim Tension Lover (MY46000), or the Mystim Pure Vibes (MY46010) - to activate the poles.