The best thing first: The bottle keeps absolutely tight !!! So: The package is solid. However, on both my bottles of extractable rubber closure is very stiff. You need a stable tooth-front, otherwise it may an incisor flutes. It should already have been bikers whose dentures unmanned disappeared in the Trail Deco in researching train at Closing corks. Have the "drinking corks" made consistently with a little washing up liquid. Isodrink with soap taste and Schaumhäubchen - something different. Although I use the matching for Elite bottle holder (plastic), the imprint scrapes in some places as early as after a very short time. You can do better. Right now I'm trying to make the closure with olive oil or Penaten cream a little more accessible. And the dentist, I was ...
