Since it’s still cold I’d like to share that I think the Horze Grand Prix Thermal breeches are the bomb: well-made, don’t pick up dust or hair, with a kind of flocked lining that gives almost the same insulation as a thick breech+base layer combo. They feel like normal breeches, which is so nice at this time of year!
The Mountain Horse winter breeches are super if you’re hacking out. I just wear a base layer underneath and winter paddock boots. They are bulky for schooling.
I have a headband especially for riding that covers my ears and the base of my neck in fleece and is just a thin elastic tape under my helmet. Makes a big difference and would be easy to make!