We got two sets of these ear bags for a cruise to Alaska.  Although it was (fortunately) warmer than they called for, we used these for a glacier walk and whale watch.  They kept our ears toasty warm even on the deck of the ship speeding on the water.  We have also used these for golf on those cold mornings.  They are very light and unobtrusive and tuck into any pocket.  I would highly recommend. They fit and stay much better than other brands we have purchased in the past.