I have been using them for two years now and I can hear the woods sounds well and the shot noise is blocked.
The only downside I have found is they are hot in the summer when squirrel hunting but it is a small price to for keeping what hearing I have left. They do make great ear muffs in the winter when deer hunting.
They are also a 'low profile' muff and don't interfere with cheek weld when shooting rifle or shotgun.