I take the lid off when drinking coffee because it burns your mouth if you try to drink through the lid. Liquid will rush out fast. When liquid cools then it works great. You unscrew the lid a half turn to open for drinking. Its great for throwing in the bottom of the kayak. It keeps liquid hot for a long time and does not leak. Great to take a break on cool mornings and have some piping hot coffe
This review was written in the old system and had content requirements that are different than reviews written today.