Outstanding boots
I purchased the Polar A/P/S boots and liner. I followed the sizing instructions on the website. When the product arrived they felt too tight, but after skiing about 10 miles on them the liners conformed nicely to my feet and now they fit perfectly. A friend of mine recommended heat treating the liners to fit them, but I that turned out not to be necessary. I am very happy with this system and expect to ski many miles on them this winter. I use them primarily for off-trail backcountry touring in Alaska, where I live.