Just a glass or a mug. Will be glowing from the electro-magnetic field of Tesla Coils. Inside the glass between the double walls is an inert gas ionized near a special electronic stand (Tesla Coaster One and Tesla Coaster Flat models). Without the coaster, the tumbler appears to be an ordinary double-walled glass tumbler.
The Tesla Coaster is NOT included. Withstands temperatures up to 100°C. Suitable for hot and cold drinks. Available in 3 different glow options.
Mug/cup capacity: 300ml. The height of the cup / mug: 12cm.