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Northwave Flash Thinsulate Road Shoe is no longer available at Merlin Cycles. However you may find an alternative or updated product below.
Northwave Flash Thinsulate Winter Road Shoe
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Northwave Flash Thinsulate Winter Road ShoeNorthwave Flash Thinsulate Winter Road Shoe

This item was discontinued 18th November 2020.

If you require help finding an alternative to this product please contact customer services.

Code: NWF-80171033-10
Northwave Flash Thinsulate Road Shoe

The Northwave Flash road shoe with an insulating Thinsulate membrane has been designed to deliver comfort, warmth and functional performance in low temperatures. With thermal insulation and a snug fit the Northwave Flash winter road shoe not only keeps you warm and protected from the elements but is also a performance oriented shoe with a stiff sole to allow for excellent power transfer through your pedals. Breathable too, when temperatures do rise slightly you won't find yourself overheating.



• NRG Air Carbon Reinforced sole with a stiffness index of 8.0
• Ultra-snug fitting upper with BioMap Aero Overlap construction reduces aerodynamic drag
• Thinsulate® 200g insulation for optimum insulation and warmth
• Extra thermal coating strategically placed on the toe
• Abrasion-resistant tip TPU reinforcements
• User-friendly SLW2 dial to adjust fit
• Integrated heel system ensures efficient heel retention
• Arctic GTX footbed with a four-layer aluminium and fleece construction delivers outstanding warmth and insulation
• 360° reflective inserts

Mr Simpson The shoes are true to size and fit the same as the Fahrenheit winter boots, but the lack of ankle cuff means that they are less restrictive. Great for those chilly windy days when winter boots are overkill but normal shoes are too cool even with overshoes. These shoes are noticeably warmer than normal but not as warm as my Fahrenheit boots
David Overall, this shoe served my desired purpose, which was to keep my feet warm during 2 to 3 hour rides in the winter, mostly in dry, sunny conditions. I live in southwest Utah in the US, where we have relatively mild winters with high temperatures in the 40s and 50s, and the colder weather only lasts about 2 months. On the plus side, these shoes are lightweight and comfortable, except that they were tight around my ankles, which meant loosening the wire more than I cared to in order to avoid ankle pain. With the shoes loosened, there was virtually no lateral stiffness in the uppers. I usually wear a 45.5 but since no half sizes were available, I went up to a 46 to ensure room for winter socks. As a result, the shoes were a little large for me, and because the uppers are so soft, without any lateral stiffness, I had to loosen the clips on my pedals in order to get enough lateral torque to release the shoes. However, I was pleased that I had enough room to wear a base layer sock underneath a pair of DeFeet WoolieBoolies, with enough room remaining to wiggle my toes. I have worn these in temperatures as low as 35 degrees with light rain and they kept my feet fairly warm. I am 59 and I don't have the circulation in my feet that I used to, so my feet get cold on winter rides. A younger person could probably get by with thinner socks without any problem. These shoes definitely don't compare in quality to the Sidis that I wear the rest of the year, but they are good enough to get me through the short winters where I live. One caution on the sizing: go with your Euro size. When my shoes arrived, the box said my 46 Euros were 13 USA, but there is absolutely no way they were that big. I would guess the 46s were closer to 11 1/2 or 12 max in US sizing.
Denis Fit well, fitted cleats & tried them on a 60 km spin (8 deg C) were very comfortable, feet very warm. Haven't had the cold weather to really test them but they will be a big improvement over my normal road shoes this winter. Usual fast service from Merlin at a very competitive price
NJ rider Great winter shoes, not as bulky as boots and comfortable for 3-4 hr rides in damp conditions in the 30s (F) with summer socks. Could easily add thicker socks for colder temps.