I saw these were on sale and decided to try them out and bought two of them. They turned out to be a great buy at the price I got them at. They fit well and were not loose at the arms like other base layers I have tried. They are great for cool days of 50+ F degrees but anything lower and these will not keep you warm enough as a base layer even with a heavier riding jacket.
While very thin, this is a nice base layer for wearing on cooler days. I'm not convinced it's as good as a thin merino wool vase layer, but it's a nice alternative to use on specific days - maybe when sunny but cold breezes.
I love this base layer and wish I could buy more (it is now sold out in my size). It is surprisingly warm, super comfortable, soft, and flexible. And the thumb holes are an added bonus, great for an inner layer like this.
Great base layer for cold weather riding. Smooth, comfortable, good fit. The thumb holes make pulling mid or outerlayer garments on over this a breeze.