Scientific Anglers make simply the best backing available. Their Dacrons are super strong and lay flat on the spool. For saltwater fly fishing, Scientific Angler's XTS braided backing is the thinnest and most abrasion resistant on the market. This ain't no ordinary braid. XTS's tough outer core can save expensive fly lines from coral break-offs and the thin diameter means you can rest assured there's enough capacity for long running fish.
