Fly reels are an essential part of fly fishing. Reels come in a variety of shapes and sizes to suit the requirements of different anglers. The main purpose of a reel is to store line and help with casting accuracy. Reels can be either manual or automatic; manual reels require the user to manually spool out line while automatic reels do this for you automatically when you cast your rod. Fly reels also have drag systems that allow you to adjust tension on the line so it doesn't break during a big fight with a fish. Quality materials used in construction will ensure that your reel lasts longer and performs better over time, making it worth investing in good quality gear from reputable brands like Orvis or Sage.