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Micro Thin Euro Nymph Floating Fly Line

✓ Micro Thin fly line for Euro nymphing
✓ Zero sag for ultra sensitive drifts
✓ Exceptional dry fly line to 30 feet
✓ Great for not spooking fish during rises
✓ Great for rivers & stillwater


Catch when no one else is catching...

Used by many teams in World fly fishing competitions to give direct contact to subsurface nymphs in calm or fast water. The Micro thin Nymph is a level line on low stretch braid core with exposed core loops. Giving you extra smooth transition to fine tippets and indicators.

Being ultra thin minimises sag between the rod tip and nymphs. Meaning the most sensitive direct contact to your flies you can get, so when the fish refuse a fly that looks unnatural, when they demand drag free drift, this is where the Nymph line comes into it's own. 0.55mm diameter to confirm to FIPS Mouche international competition rules, the ultimate in direct contact fishing.

Get your nymphs down to where the fish live and feed ...... catch when no one else can. Fish like a World Champion.



Head Length

Total Length

World Nymph




Customer Reviews

Based on 23 reviews
gavin watkinson (Leyland, GB)

A very good nymphing line, zero stretch, dull colour, braided loops IE no tippet cutting through the coating.

I have been an avid user of the snowbee thistle down 2 line which I think is a very good line for nymphing and dry fly fishing,
but I think they fu@k#d up with the coating on the welded loops, although with this line you can not cast a dry fly as some people say you can,
but for Czech or euro nymphing which ever you wana call it I believe it is second to none, I have abused this line every other day like a boss for the best part of a month with no problems, even with
strong wind's putting a bow in the line I was still able to feel nymphs hitting bottom and the takes of small grayling as with the snowbee line I was not.
the line's very thin but with a rough sort of texture ( with freezing sausage fingers that's a plus ) while fishing for grayling the first fish I ever caught on the line
was the brown in the picture Oos but what a beast 20 inch if not a bit more using no indicator and only a foot of tippet from the line to a tippet ring with a dropper on
and another foot and half to the point fly, which I think is a bit extraordinary as with most lines if they were a couple of feet under the water I have no doubt they would spook most fish,
the line being sort of a matt grey colour I think it makes it hard for the fish to see when under the water, that being said it also makes it hard to see against the backdrop of water,
so using an indicator would make life easier but its not a necessity as you can literally feel everything through the line while fishing blind so to speak.

the snowbee lines off the reel this gets a thumbs up from me, if your a nymphing freak like me try this line you wont be disappointed.

James Rae
Hardly moves in the wind.

"The line is very good for many different types of nymphing methods, including Czech, French and European, it is also very good for dry fly fishing. I've tried it on very windy days and the line hardly moves in the wind. The hi viz tip is very easy to see in most light conditions and when paired with the sunray nymphing rod it is the perfect combination. Takes are easily seen and felt. I've been fortunate enough to have caught some very large grayling with this set up and the sport was astounding, both the line and rod handle big fighting fish brilliantly. I would throughly recommended this line to any angler!"

You've experienced a design element. The fact it cuts the wind, thanks James,

Jeff Harrison
Allowed me to land this 25" brown that weighed over 12lbs using a 2wt rod!!!

"What can I say about this line other them AMAZING!!!! It's hard to believe that this thin nymphing line allowed me to land this 25"" brown that weighed over 12lbs using a 2wt rod!!! The strike detection is simply out of this world. Give it a try, you won't be disappointed!!!"

It's so sensitive due to it's thin diameter Jeff. Thanks for sharing.

David S.
Amazed at the distance that can be cast even with a size 24 CdC fly

"Recently I've got around to giving the Micro Thin Nymph line a thorough testing. I generally prefer dry fly fishing, only resorting to nymphing as a second choice; as a result I usually use the Sunray Jeremy Lucas 1 weight line with my 10' 2 weight rod or the 3 weight version with my 10' 4/5 weight rod. However I have found that the Micro Nymph line os not only great for Euro Nymphing but superb for dry fly when conditions are not too windy & distance casting is not required. Presentation is hyper-delicate. My latest set up involves attaching a 5' taper cut from a 12' Rio Powerflex tapered leader with a small perfection loop at the tip end to which I can attach a short braid indicator & 3 to 6' of tippet for nymphing, whilst for dry fly I remove the indicator & just use 4 to 5' of tippet. I have been amazed at the distance that can be cast even with a size 24 CdC fly & the handling of this line is great."

Thanks David. You've been a great supporter for many years. It's an honour for me because you are one of the most knowledgeable fishermen in the UK in my opinion. Thanks for sharing this in depth review.

Exceptionnelle pour sa finesse

"Hello I'm A french fly fisher man so I'will post in french language. Cette soie est exceptionnelle pour sa finesse et permet de longues d?rives. Id?ales pour p?che en nymphes, elle permet de p?che loin des postes tout en gardant un contr?le des mouches. Le vent ne pose aucune contrainte. Avec son faible diam?tre, elle r?pond aux exigences du p?cheur de comp?tition. Bonne saison !"

Sorry I dont speak French but I hope you enjoyed the line. I see you gave 5 stars so....

Joseph Kruppo (Walton, US)
No problem with Sunray

Very impressed with Sunray products no problems what so ever.
Even shipping to US product is here before expected.

Gregory Cann (Pontypridd, GB)
Great line

I’ve had another level type nymph line but I was surprised to see how much thinner the Sunray line was , handles great on the water and takes my fly presentation up a notch from my old set up , a very nice line !