This very unique tool box design travel mug is great not only for grab-n-go personal use but also great for gifting or party favors for any event. It can be custom imprinted depending on your theme or type of event. One of the many special features about this tool box designed travel mug is its stain resistant insulated black plastic liner that locks in beverage temperature to preserve flavor and freshness. The twist on/slide open black plastic lid promotes easy drinking or filling and prevents spilling. It has a stainless steel exterior that is unbreakable encase of being accidentaly dropped. It's slim body fits most automobile drink holders. Its black blastic handle makes the mug easier to hold.