Looking out for your thirst from all angles is the MiiR Leakproof 360 Lid. Open by pressing down the center button, and sip directly from the 360 degree mouthpiece. A subtle indicator line clearly shows its open/close position. To confirm the lid is closed, ensure the center button is above the line.  Fits the MiiR Tomo, all Wide Mouth Bottles, and all Flip Travelers.