The pods are made out of a dark tinted plastic that allows checking e-liquid levels easily. They feel really well made and complete the package perfectly. There’s also a lighter tinted plastic cover that’s handy for keeping the mouthpiece clean. And while we’re at it, the ZQ pods house a non removeable flat mouthpiece that’s super comfortable in the lips, and a metallic airflow adjustment mechanism that looks a bit like a submarine periscope.