Was excited about this boot, US size 14 (48) seems hard to find (not sure why, in mountaineering boots you're supposed to go one size bigger, and size 13 seems fairly common). Unfortunately it dug into the outsides of both my feet BAD just walking around the office for a while. I tried removing insoles, lacing loosely, everything, still rubbed. I was so disappointed because otherwise it was comfortable to walk in, felt lightweight, looked pretty damn cool, and represented a warm, flexible alternative for me vs. leather boots as I get too cold in them. Also I wanted something I could take to Denali or do any sort of Winter climbs. Even for spring/summer, I previously tried the Lowa GTX boots and my toes got way too cold even in good weather from 12,500 up on Rainier.For a Mt. Adams climb I did a last minute REI switch from Baruntse to the Invernos due to burn issues on the Baruntse. The Invernos are a bit loose to I'm on the fence due to ankle protection, but I'm going try tightening the inner boot more and maybe putting on some neoprene ankle wraps to fill out volume/provide more ankle support. Invernos are sort of a last resort as they just don't feel like a great fitting boot and are heavier, it's like a completely inflexible big plastic shell, then and inner boot. But what can I do? Open to other boot suggestions. Want something that can do winter + June Denali, in addition to Rainier spring/summer (I’d rather be too warm on the feet). Plus I need the boot in a US 14.If you have narrower feet, this boot may be awesome for you. Also if you have this boot, write a review because I literally could not find one review on this anywhere and I hate buying un-reviewed items. I will say that I don't consider myself to have wide feet necessarily, I guess maybe just slightly wide? I fit most other shoes/boots aside from a lot of Salomon trail runners which run super narrow. Anyway 3 stars but if you don't have the rub problem maybe these could be 5 star boots for you.NOTE: backcountry doesn't carry anything beyond a size 47 in this boot, bought the 48 from a local shop near Mt. Rainier.

Wore these out of the box on a hike up to Rainier base camp (Muir) with liners and smart wool mountaineering socks. Destroyed my heels, out for a week with big ripped off pieces of skin. I blame myself, however, for not gradually breaking them in and not lacing correctly.Just summitted Rainier on Fri night, at Ingraham flats when sitting in the snow while tent went up I noticed my toes were mildly cold (wearing liner and the warmest smart wool sock). No biggie. After getting to about 12.5-13k ft. both me and my friend (same boots) noticed cold toes even while moving (albeit slowly as we got further up). Not overly concerned, but slightly uncomfortable, had to keep moving toes within the boot. This morning I noticed my toes are slightly numb/tingly, I believe I incurred some very minor frostbite. Weather at Rainier was described by many as "perfect", no clouds, warm, no precipitation whatsoever. If these boots can't keep me warm on Rainier with outstanding weather, it will probably just get worse from here. Sucks too because these run big (meaning long, they are narrower), no other boot has come close to fitting me yet (all too small or don't come in larger sizes, I wear a 13 street, 13 in these worked for me). For example, I tried one of the comparable leather la sportiva'a in a 48, toes hit the end and I guess a 48 is supposed to be a US 14. Side rant: Boot manufacterers please unite globally with consistent length sizing to the MM! Don't make us consumers waste time figuring out if you've decided to make your boot "run big" or "run small". The foot is 3 dimensional sure, but at least get the length right. Final notes: I'm generally more sensitive to cold, if you're not you may not have this problem, but I don't think my friend is super-sensitive to cold and his toes were cold, so who knows. These boots were light and comfortable (comfortable as far as full shank crampon compatible boots go), so if you don't think you'll have the cold problem and/or climb using crampons in something more mild than a nice day summitting rainier (maybe 20 degree clear weather with fairly strong winds) they might be a home run.

Didn't feel that warm, wasn't form fitting at all (probably contributed to it not feeling that warm), over style wasn't great. I'm 6'4", 215lbs, got an XL, sleeves were long enough, but it just didn't feel right. I don't recommend.