curve

According to the survey and research, it was found that the elderly faced the problem of opening the water bottle by themselves, which was inconvenient to drink. Therefore, the method of opening the water bottle has been changed to pull up, tilt 60 degrees, and close by pressing the lid down. The lid will be larger to fit in the hand and have a slight curve to hold with the fingers. The lid closes tightly because there is a flexible part protruding and there is a groove on the lid and the bottle, so when pressed down, it will lock just right. As for the shape of the bottle, there is a curvature at a level that the hand can easily hold, and the radius of curvature is suitable for use. So this water bottle uses plastic material, and the flexible part of the cap uses rubber or silicone.