Tenga Egg Snow Crystal masturbator. The TENGA EGG Series features super-stretchable material that fits users of almost any size, with each egg's external design reflecting its internal details. The Tenga Egg Snow Crystal offers a cooling sensation for enhanced stimulation. These single-use, disposable masturbators are simple to use: peel the wrapping, open the shell, apply the included lubricant, use, and then dispose of the egg in its casing.