My chest harness problem was eating and food falling on the eyepiece lenses.

Then I quit eating carbohydrates and stopped being hungry all the time.

Now I use "MINOX BD Compact 7x28 BR Binoculars Autofocus Flat Field", that have a very short neck strap that keeps them right under my chin.

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps