I give it 4 stars, but only because I bought it "off season" when the price was *much* lower than it's been since mid-Fall. (That may explain the discrepancy between some of the reviews, too, since most reviewers don't mention what they paid for it.) Mine was about ten bucks, in mid-September. It's easily worth that price. I bought one to try and left the item in the "Saved for Later" part of Amazon's shopping cart to buy more if I liked it, but by the time I'd thought to order more, the price had shot WAY up. (The same thing was true for the glove liners I bought, and the long johns I unfortunately did not buy the first time around.) As always, silk is *much* warmer than cotton and warmer than most wool, but that's as measured *by weight*. This undershirt is warmer than a currently-common thin cotton undershirt, but no warmer than a heavier cotton T-shirt. But is IS much thinner and more comfortable. I especially like wearing it under a thinner pullover, where it provides adequate protection (for both my skin and the sweater) and a little extra warmth without visible bulk. (I do wish they made them with a V-neck, though, since the collar is a tad high and tends to show around the neck of many of my sweaters.) The wrist cuffs are a bit on the loose side, but that's pretty typical of pure silk and I've always found this a common problem with long-sleeved silk undershirts, the fiber just isn't as springy as cotton and some types of wool. A little lycra in the cuffs would be nice, but seriously, I wouldn't expect that sort of touch in anything but a very expensive shirt - WIntersilks don't have it either. But at full price ($20s), I won't be buying more. (If/when prices go back down next Spring, I will stock up, however.) I don't own any recent-vintage Wintersilks, so I don't know how they're making *them* these days - the few pieces I have are all more than 20 years old. (Living in NYC where it very rarely gets "bitterly" cold, I just don't have all that much use for them, though I have worn them regularly, if not frequently, every Winter for all that time.) To be fair, not all of my Wintersilks have surived that long, but a few have, and I don't take special care of them. They go in the warm/color wash and get dried in the drier. I very seriously doubt, on the other hand, that this shirt will last 5 years, much less 20. And since I can't be bothered with things like "lingerie bags" for the washer, am very unlikely to risk putting these through a regular wash cycle along with my other clothes. The fabric isn't terrible. It's not so much that the yarn seems much thinner than other silk undergarments', but the knit is definitely looser.
