They are somewhat bulky but over all they are one of the best pair of glasses I have owned. For trecking all day I would recommend some sort of harness so the weight isnt on your neck, I use a twoinch wode camera strap that is nade from a spongy type of material and is long enough to wear across one shoulder across my chest so the binocs are riding on my somewhat behind my left hip so I can use both hands and still get two them in a secound when needed.
Pros: The ease of use
Cons: Nothing major, the neck strap could be wider and perhaps made from some sort of foam mateial.
This review was written in the old system and had content requirements that are different than reviews written today.