I bought this thermos for someone who complains about not being able to unscrew conventional cylinders. In a conventional bottle, the cooling of the hot beverage creates a vacuum and the bottle is hermetically closed, the cap is not easy to unscrew. In contrast, Senator cap is very easy to open. It is provided with a valve actuated by a lever red. Just move the lever to open the cap.
The beverage may also be provided without having to unscrew the cap, using a spout included in the cap. In return, the flow is a bit slow, just be patient.
Apart from this innovative plug, this bottle, made in Germany, is quality. the beverage stays warm for a long time and stainless steel finish is perfect.
