The slim shape fits in the hand and most bottle holders. It is super portable with a carrying strap.Take it outdoors for camping and hiking.Soft-touch feel, exterior walls provide improved scratch resistance.Hang it up when outdoors, or carry it with just one finger! Various colors to choose from. Whether in the gym, before and after training,bodybuilding,weight loss, travel,exercise, hiking,yoga, camping,running,tennis,cycling, jogging,swimming, office,school, outdoor or other sports.