Summary: I wanted a small set of binoculars but with a decent sized objective lens, for camping, hiking and outdoor activities. I felt that 42 mm was as large as I could go and still feel like I was not carrying around a full size pair of binoculars up a mountain.
Summary: I wanted an all round pair of binoculars for camping and hiking, as I regularly go away for weekend trips. I didn't exactly want to lug around a huge pair, so I purchased these. They work fantastically well. Very happy I made the choice to get these.