For takeaway and homemade drinks alike, this WU Eagle tumbler is perfectly-sized for people on the go (20oz / 0.6l).  It also features a clear push-on plastic lid with a narrow mouth opening to reduce the risk of spilling.
.: Material: durable premium stainless steel
.: One size: 20oz (0.6l)
.: Easy sipping, clear push-on plastic lid
.: Narrow mouth opening