Little Presents Fishing Gloves provide warmth in the winter and sun protection in the summer. Fingertips are free for knot tying.
The gloves are spandex (58% nylon, 37% polyester and 5% polyurethane) and are one-size-fits-all. They were designed for Japanese anglers, so for Americans it might be one size fits most. They are quite stretchy, though, so you'd have to have pretty big hands for them to be too small.