This fun drink tumbler is a perfect way to end the day. Who knows, maybe even use it for coffee and a little splash of alcohol if you know its going to be a long one. This cup is a stainless steel double wall vacuumed BPA free tumbler. A plastic sealed removable tight lid that is spill proof. It wont fall off easily at all. It has a slide top to easily close and open for easy access. Keeps drinks cold for 24hrs and hot for 12hrs. Hand wash only, but this cup is worth it.