What special gear did they have to wear on the moon?

A space suit must perform several functions to allow the astronaut to work safely and comfortably. It must have a stable internal pressure (similar to the Earth's atmosphere), it must allow the astronaut to move easily, it has a "primary life support system" which allows for the circulation of cooled and purified oxygen so that he/she can breathe, it allows for temperature regulation, sheilding against UV and particle rays, it has to have a communication system, a way to dock to the spacecraft and a way to collect and contain solid and liquid waste. And that's all in the space suit!