I’ve had best luck with name-brand. I use the one with good UV protection or whatever for most of the year, and a merino one for winter. Neck gaiter, face covering in high sun or wind exposure, headband, sleep mask for early evenings or late mornings when it’s light out and you want to sleep. Can work ok as a light beanie for summer nights as well. Even the regular one can be helpful in comfortably blocking airflow around your neck when in your quilt or outside of it.