Andrew L.wrote a review of Outdoor Research Alti Mitten - Men's on January 21, 2015
After too much research, I ordered these mittens. Based on reviews I ordered a large, instead of an extra large which is the size I have always needed. Two problems: large was a little small, and an extra large probably would have been too big. I wore them for one morning in 15 degree +/- weather, and my hands were not warm. I admit to having a real problem with cold hands. Main problem with this pair was that the thumbs were very tight (not conducive to keeping them warm), and I do not have thick thumbs. I don't know if a different "large" might have provided more roomfor my thumbs. There would have been plenty of room without the liners, but much less warmth. I returned the mittens. Back County has handled all aspects without a problem on its part. I have since purchased Hestra XCR extra large (size 11) (that size was not available at Back Country) which do not have a separate liner and no pocket for hand warmers, and I haven't tried them except for fit.