Loon Outdoors Kit - UV Knot Sense, UV Nano Light, Sink Fast, Line Speed, Fly Line Cleaner, Cleaning Pad and Carrying Bag Review (2026)

What is actually in the bag

This kit bundles six separate Loon Outdoors products into one carrying bag: UV Knot Sense, a UV Nano Light, Sink Fast, Line Speed, a fly line cleaner and a cleaning pad. That is a wider spread than a typical single-purpose line care kit, since it covers knot repair and reinforcement alongside line dressing for both floating and sinking lines. The carrying bag keeps the small bottles from rattling around loose in a gear bag or vest pocket, which matters more than it sounds once you are digging through tackle at the river. Buying these six items individually would mean tracking down each one separately, so the appeal here is convenience and having everything in one place rather than any single product being unique to the bundle.

UV Knot Sense and the Nano Light

UV Knot Sense is a UV-curing resin you apply over a freshly tied knot to smooth it and add strength, and it also works as a quick fix for a damaged fly on the water. It cures soft and pliable rather than rock hard, so a coated knot still moves through the rod guides without catching. The catch is that it needs UV light or direct sunlight to cure, which is where the included UV Nano Light comes in: a small, portable light strong enough for streamside curing when the sun is not cooperating, and also usable at a tying bench for the same resin. Together the two items are meant to be used as a pair. If you already own a UV light from another brand, half of this benefit is redundant for you.

Line Speed, Sink Fast and the cleaning tools

Line Speed is a dressing made for floating fly lines only, meant to improve shootability and extend the working life of the coating. Sink Fast does the opposite job, repelling water to help sinking lines get down faster, and it is labeled for sinking lines only, so using the wrong one on the wrong line type will not help. The fly line cleaner and cleaning pad round out the kit for basic maintenance, wiping accumulated dirt and grime off the coating before applying either dressing. Line care products like these work best as part of a routine, cleaning every few outings rather than only when a line already feels sticky or is casting poorly, since grime that sits on a coating for a full season is harder to fully remove.

Who gets full value from a bundle this wide

Anglers who fish both a floating line for dries and a sinking line for streamers or nymphs get the most out of this kit, since it has a dedicated dressing for each. Anyone who also ties flies benefits from having UV Knot Sense and a Nano Light on hand for finishing heads or repairs, beyond just leader knots. If you only ever fish one floating line and never tie flies, you are paying for Sink Fast, the UV resin and the light without a clear use case for them, and a simpler single-purpose cleaning kit would cover your actual needs for less complexity. It is worth being honest about which of the six items you will actually reach for before buying the full bundle instead of the individual pieces you need.

Care tips and realistic expectations

None of these products replace basic habits like rinsing sand and grit off your line after wading in silty water, which does more to extend line life than any dressing applied over dirty coating. Apply Line Speed or Sink Fast to a line that has already been wiped clean with the cleaning pad, not directly over grime, or you are just sealing dirt against the coating. UV Knot Sense should be applied in a thin layer, since a thick blob cures more slowly and can crack rather than flex with the knot over time. Store the UV resin out of direct sunlight when not in use so it does not begin curing inside the bottle. Treat this kit as ongoing maintenance rather than a one-time fix, since dressings wear off with use and need reapplying through a season.

Frequently asked questions