I've been riding horses for five years, year round, daytime and evening.  Winter in New England is cold and unrelenting and there is nothing worse than cold hands and feet when you're doing something that should make you happy - instead you're miserable and can't wait to get back to the barn.  Sort of defeats the whole purpose.  I've tried foot warmers (on top and bottom of my feet), reflective insoles, you name it.  Even tried some well-known brands of winter riding boots.  All to no avail.  But I got lucky - stopped into a local shop and saw these.  Never heard of Kamik boots before but tried them on and knew they had possibilities - but they were too small.  Headed home and found them on-line.  My feet have been warm ever since.  They only come in even sizes so I got a 10 and slipped a insole from an old pair of sneakers between the bottom of the boot and the insole that came with it.  Perfect fit.  If I wear two socks I just take the extra insole out.  But get this - I have yet to wear two pair of socks and STILL my feet are warm.  Cold windy days on the trail or cold dark nights in the indoor (unheated) arena and they are awesome.  What's nice too is they don't have oversized lug soles - they fit safely in stirrups.  And the pile lining make them soft around my leg and ankle - no breaking in period.  They have been waterproof  -  found out  when I didn't see a puddle at night.  And lastly, they are lightweight.  Five stars easy - would have given 10 if more were available.  I've searched and experimented and tried other boots and these are the holy grail.