The Hot Box Vaporizer features a Ground Glass connection and a hands-free whip delivery system that pumps out clouds of great tasting vapor without any worry about combustion. What's cool about the Hot Box is that it's truly a customizable experience with the vapor flow being controlled by the user's breath. The temperature is consistent and intensity of your inhalation will depend on the length of your draw. Hot Box Vaporizers are available in a variety of colors: Green, Red, Black, Yellow, Grey and Blue.