A good skivvy is hard to come by these days. These skivvies, available in lots of nice colours, do very nicely.
The collar (basque) stands up well and keeps your neck warm. Arm length is good, and the sizing fits well.
My only criticism is that (for the price paid) the fabric could be a little thicker, warmer and softer to the touch. I note that they are made in China. But I hope my dollars go towards this Australian company.