Tees, hoodies, flannels, fleece, riding jerseys and baselayer tops from Oakley, DC, Element, Burton, Mountain Hardwear, POC, O'Neal, Poler and Hot Chillys.
On layering: baselayers are cut to fit close to the skin, midlayers are cut to go over one. If you're between sizes, size down for a baselayer and up for anything you'll wear on top of it.