The slide and flex bino system works great with heavy binoculars. It will alleviate the stress caused by a neck strap and will also help to keep your binoculars secure against your body when navigating through the brush or the forrest. They are very well constructed and easy to use. You can have the slide and flex bino system installed on your binos in less than 5 minutes.
This review was written in the old system and had content requirements that are different than reviews written today.