TherMerino Jersey

Size Guide Size Calculator

Soft and luxurious fleece on the inside of the jersey will keep you warm and cozy on cold rides. Its blend of tech materials and Merino will be your key to feeling completely weather ready.

Explore More
225,00 USD
  • Free standard EU shipping on any order over 150 EUR
  • Express EU delivery 1-2 business days
TherMerino Jersey Sycamore
TherMerino Jersey Sycamore 225,00 USD

Thick and incredibly versatile cycling jersey for winter riding

Product description

Luxuriously soft and warm, with material that is a touch more concentrated than the Long Sleeve Jersey, our TherMerino Long Sleeve Jersey offers comfort, insulation and a fitted, non-flappy cut for cold days in the saddle.

  • Combination of finest Merino wool, Polyester and Elastane
  • Side panels construction for better anatomic fit
  • Silicone tape around the rear hem to keep the jersey in place
  • Designed by Martin Velits using his experience from the pro peloton
  • Made in Slovakia
  • 53 % Polyester
  • 43 % Merino wool
  • 4 % Lycra

Size Guide

Dimension table (cm)

A - BACK LENGTH < 64 64 – 67 67 – 70 69 – 72 71 – 74 73 – 76 76 – 79 79+
B - CHEST < 82 82 – 84 84 – 88 88 – 94 94 – 100 100 – 106 106 – 114 114+
C - COLLAR < 33 33 – 35 35 – 37 37 – 39 39 – 41 41 – 43 43 – 46 46+

Dimension table (inch)

A - BACK LENGTH < 25 25 – 26,5 26,5 – 28 27 – 28 28 – 30 29 – 30 30 – 31 31+
B - CHEST < 31,25 31,25 – 33 33 – 34,75 34,75 – 37 37 – 39,5 39,5 – 41,75 41,75 – 45 45+
C - COLLAR < 13 13 – 13,75 13,75 – 14,5 14,5 – 15,5 15,5 – 16,25 16,25 – 17 17 – 18 18+

The cut is slim fit, made out of stretchy materials. The sizes and cuts of our products, however, are designed to fit standard dress size parameters you would usually wear.

Sizing guide

Not sure if you had choose right size?
Use our Size Calculator feature.


5 / 5
54 reviews

  • Good addition to my wardrobe

    Joost Gremmen, Netherlands, 3.3.2021

    I bought this long sleeve recently. Too late was my first reaction when I had it in my hands: it's thick and heavy, and winter already left my country. But on a early morning ride (around zero Celsius) I decided to wear it. At first it seemed not warm enough, as it doesn't block the wind, but after a minute of 10 it started to do what you want such a shirt to do: keep you comfortable without making you sweat (and cooling you down again). The remain of the ride it stayed like that and that is, for me, unusual but very positive. This shirt is well made for longer rides in lower temperatures. Perfect for a gravel rider such as myself, who rides all year round.
    Show full review
  • versatile jersey for autumn/early winter rides

    Fabian Grossenbacher, Switzerland, 24.11.2020

    At first I was sceptical, because of its thickness of the jersey I thought it might be too warm if the gradient on my ride gets steeper, but that wasn't the case at all. I wore the jersey for the first time on a sunny, but cold and slightliy windy day (at around 7 C°) with only a light long sleeve baselayer and a vest in my pocket for the downhill (by the way: the pockets are great as well). The jersey surprised me. It was very cozy and comfortable from the moment I sat on my bike. It didn't get to sweaty uphill and I didn't even need to wear my vest descending - it performed great on every terrain. And the fit is just perfect for me, I took the recommended size (not racefit, though).
    Show full review
  • Quality and Stylish Jersey (with real sheep smell when wet)

    Bartosz, China, 4.10.2020

    First impressions, quality stitching, quality materials, eco friendly packaging, good skin feel, stylish design. First ride today, 23C but windy and rainy, feels like 18C on the bike, no base layer, yep perhaps a bit warm to wear this but I was keen to try it out. First half of ride I unzipped it a bit to not overheat, second half of ride a big wind picked up and started to rain heavily, I zipped it up to retain warmth, neck was protected despite not wearing a neck warmer, I pulled it lower over my backside and rode on, wet but warm, no discomfort whatsoever. This is what merino is all about. Came home a happy camper and smelling like a musky sheep. When it gets colder I will add a base layer underneath. 10/10. Sizing: I am 1.80m and 83kg but with wide shoulders and chest. I went size "L" and its perfect.
    Show full review
  • Perfect for hard winter

    Melih Aslan, United States, 21.11.2021 (TherMerino Jersey Dried Tobacco)

    I recently moved to MI so winter is too harsh here however if it is not a rainy day this is a perfect product to keep you warm. I really liked the fabric.
    Show full review
  • Another winner

    Kathleen Holoch, United States, 12.12.2020 (Women's TherMerino Jersey Cabernet)

    Wore this today, 49f and rain showers. The jersey isn't super windproof, but that also is why it breathes very well. I was comfortably warm and never felt wet or cold (or overheated). I liked the length of this jersey. It seems a little bit longer than some of my other Isadore jerseys, which is perfect for cold weather. The pockets are generous enough, the zipper is easy to operate, and the sleeves are nice and long. Overall, another great purchase from Isadore. The fabric, fit, and details on their clothing is great. Everything I have from them looks brand new no matter how many times I've worn it. Great quality and worth the investment.
    Show full review

Load more

Related Products

Signature Long Sleeve Jersey Ruby Wine
Signature Long Sleeve Jersey Ruby Wine
+ Quick Add
TherMerino Jersey Dried Tobacco
TherMerino Jersey Dried Tobacco
+ Quick Add
54 Reviews
225,00 USD
Signature Long Sleeve Shield Jersey Anthracite
Signature Long Sleeve Shield Jersey Anthracite
+ Quick Add
49 Reviews
220,00 USD

Vibes from the road

Don’t forget to tag @isadoreapparel us when you showing off