Women's Merino Long Sleeve Baselayer 1.0
When the riding weather turns decidedly chilly, it’s time to break out the 100% Merino Long Sleeve Baselayer. Slightly thicker than the SS and SL versions, this is a base that can be paired with one of our Long Sleeve Jerseys to keep you warm well into the worst of winter.
Explore MoreNatural Merino fibers to keep you naturally warm
I have been really impressed with this base layer. It is a great fit, and super warm so far. I have been riding in 1 - 10 degrees and the base layer and a Gabba jersey have been a perfect combination. I really like the quality of the base layer and hope it last longer than my previous merino layer, from another leading brand, which disintegrated after a couple of years. Cstomer service and packaging are a joy also.

Product description
The comfort level of your ride is often in direct proportion to the effectiveness of your baselayer. With a Long Sleeve 100% Merino Baselayer, you will have the best natural material right next to your skin, wicking moisture away from your body to help keep off the winter chill. Merino ensures the perfect level over insulation for cold rides. And you won’t have to worry about introducing your smelly presence into a coffee shop since the Merino offers an odor resistance to help you from alienating your neighbors at the next table.
Specification
- Women’s specific fit
- Constructed from 250 g/m 100% Merino wool
- Soft to the touch
- Excellent moisture wicking properties
- Easy to care for with cold water washing
- Designed by the Isadore team and Martin Velits using his experience from the pro peloton
- Made in the E.U.
Materials
- 100% Merino wool




Features
- Thumb loops for the coldest days
- Multiple color options
- Slim performance fit
- Distinctive collar cut construction
Size Guide
DIMENSION TABLE (cm)
SIZE | XXS | XS | S | M | L | XL |
A - BACK LENGTH | 61 – 64 | 64 – 67 | 66 – 69 | 68 – 71 | 70 – 72 | 71 – 74 |
B - CHEST | 74 – 78 | 78 – 82 | 82 – 86 | 86 – 90 | 90 – 94 | 94 – 102 |
C - HIPS | 78 – 82 | 82 – 86 | 86 – 90 | 90 – 94 | 94 – 98 | 98 – 102 |
DIMENSION TABLE (inch)
SIZE | XXS | XS | S | M | L | XL |
A - BACK LENGTH | 24 – 25,2 | 25,2 – 26,4 | 26 – 27,1 | 26,7 – 28 | 27,6 – 28,3 | 28 – 29,1 |
B - CHEST | 29,1 – 30,7 | 30,7 – 32,3 | 32,3 – 33,9 | 33,9 – 35,4 | 35,4 – 37 | 37 – 40,1 |
C - HIPS | 30,7 – 32,3 | 32,3 – 33,9 | 33,9 – 35,4 | 35,4 – 37 | 37 – 38,6 | 38,6 – 40,1 |
All our baselayers act like a second skin. Extremly slim fit cut with extended back side for lower back protection. Whatever Isadore jersey size you are used to wear, this baselayer will certainly fit you in the same size. However if you prefer more casual fit, we advice you to choose one size bigger than the Isadore jersey you are used to.

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Designed & developed using the experience of former professional riders
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For a healthy planet to ride on
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Free standard EU shipping on any order over 150 EUR
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Risk free 45 Day return policy
Reviews
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Too short
I am 78kg, 188cm with a chest of 100cm. I purchased in XL however arms and body are too short. However this Meriono-Shirt keeps you warm even when it is wet.Show full review -
Great product
I'm enjoying wearing it even when I'm not going on bike. It's very confy and warm. On a bike is working well in cold, used only once, but was very happy with this product.Show full review -
Too scratchy for a hairy chest
I liked the product however I have a hairy chest and it was really scratchy for me to use it. I had to return it.Show full review -
size it one up :)
get one size bigger then your usual isadore product. its quiet short on the arms (im not a long arm guy, really just regualr). im 179cm and around 77kg. i usual have Medium (the regular tshirt baselayer fits perfect on me) but the long one was just to tight in armpits and to short on the arms. the merino wool feels awesome.Show full review -
THE BEST - ALL AROUND LAYER WITH 100% MERINO
I am 182 and 74kg, ordered M (I have everything in M from Isadore) and it comes Race fit. (if you want more relaxed, then go one size up). I use it for Hiking and Winter climbing as well. This is such a quality product from Merino, the best I have ever seen or used (I have a lot of them). Soft on touch and really warm and thick. The price is a steal, go for it!Show full review -
Superb
I have a drawer full of merino thermals I wear both off and on the bike. Most are 150 or 180gram weight. This one is 250gram and is the best by far. The sizing is tight to begin with but merino does loosen up with time. Some have commented that these are expensive. I disagree. If you can find a 250gram merino top at a better price I would be surprised and of this quality definitely not. Chapeau Isadore!Show full review -
Comfortable and breathable
Had my 100% Merino LS baselayer for a couple of years now, and it still feels very soft and comfortable against the skin. Mine did shrink a little after a few washes even after following the care instructions, so in future I might be inclined to size up. The Maritime Blue colour is definitely closer to the blue in the model photos, rather than the more purplish tone in the product image, but it's still a great colour.Show full review -
Very nice
For a 'winter' baselayer I would preferred a higher collar, but is still a very fine shirt. Following other reviews I have ordered a size bigger than normal. Size L is just perfect for me: 1.86m/72kg.Show full review -
Nice baselayer
I love the soft feeling of this perfect baselayer. The holes for the thumb are nice keep the sleves on the place but, at least for me, they are not useful during the ride. Perfect temperature keeping, and as promise no smells after using! 185 cm / 84 kg size XL good fitting.Show full review -
Comfortable and form fitting for colder rides
I wear several non-cycling merino shirts as base layers. This one is better: softer on the skin and form fitting. It is also thicker than the others, so I wear it on my coldest rides. I am 193cm/95kg and the XXL fits me perfectly.Show full review -
Comfortable but sleeves too short
Just bought XXL (180/90) for Winter walks and rides, feels very comfortable und cosy. Unfortunately the sleeves are about 2-5 cm to short. Usually this is not a problem for me with other brands and the Ovada Deep Winter Baselayer Men in XL. Using the thumbholes helps a littlelittle bit. Please give some cms to the sleeves ;-), especially for winter.Show full review -
great stuff
Beutifully packaged ,real luxurious feel. Fast wicking,really comfy.Only one thing,it could be a little longer in the waist.Show full review -
High quality merino
I purchased a few of these long sleeve merino base layers. It's a high quality merino, which allows for some flexibility in temperature to stay comfortable (not too hot or cold), so I use this base layer when temperatures differ much between the start and finish of my ride. It's also very nice to have a beautiful blue instead of black or white. I'm 1.75 m and 71 kg, and purchased Large (which is a very comfortable fit, and still close to the body - Medium should be my size, but I prefer a larger fit for winter and have longish arms). As I have a number of these already, needless to say that I'm very happy with this great base layer.Show full review -
GOOD ADVICE
Great base layer pair this with long sleeve jersey and Merino Softshell Jacket still warm in sub-zero conditions. Love the thumb holes nice touch. The advice is to buy a size bigger than your jersey size - i can definitely recommend this as even when using cool hand wash the item did shrink a little which is fine if you buy a size up. Highly recommended as usual with the brilliant Isadore gear!Show full review -
Au chaud tout le temps !
J'utilise ces baselayers pour courir ou pour les sorties à velo et j'en suis vraiment content. Ils sont parfaitement coupés et leur technicité en fait un allié précieux pour rester au chaud et au sec. Je les recommande fortement +++Show full review -
Best baselayer I have owned
I have been really impressed with this base layer. It is a great fit, and super warm so far. I have been riding in 1 - 10 degrees and the base layer and a Gabba jersey have been a perfect combination. I really like the quality of the base layer and hope it last longer than my previous merino layer, from another leading brand, which disintegrated after a couple of years. Cstomer service and packaging are a joy also.Show full review -
passt
perfekt ! - mit potenzial auch bei mir zum lieblingsstueck zu werden ! mit drei kleinen einschraenkungen: - die daumenschlaufen sind nicht mein ding ... dort zieht es rein - die armel sind an den handgelenken etwas weit (in kombi mit den schlaufen - zugluft) - xl passt perfekt - allerdings ist die laenge ist etwas knapp bemessen fuer ein rad-baselayer-teil. hinweis. laut groessentabelle wuerde ich zwischen L und XL liegen ... habe das SS in L und das ist ziemlich knapp. daher auch meine empfehlung eher groesser waehlen. 190, 81kgShow full review -
True Merino experience
Quality Merino under vest, feels soft and dry all the time. Great fit and outstanding design, i actually ended up using it in colder days also while working.Show full review -
So geht's!
Wieder volle Punktzahl für ein Isadore-Produkt: Sehr gute Passform, die Ärmel mit Daumenschlaufen haben die richtige Länge, sehr angenehm zu tragen, tolle Isolation, behält beim Waschen die Form, langlebig. Dazu lässig designed und nachhaltig hergestellt. So geht's.Show full review -
The best base layer I own
This is truly one of the best pieces in the sport section of my wardrobe. I wear it all the time, on and off bike. It has all the qualities of merino wool, it does not smell and won't make you neither too hot nor too cold. Moreover, the fabric is the most quality merino I have ever worn, it is incredibly soft and fluffy. The fit is perfect, too. And the cherry on the top is of course that it's made locally in the region. Dream! I only wish Isadore made black or white option, I would buy the whole bundle instantly.Show full review -
Schlichtweg das Beste!!!
Aufgrund der positiven Rezesionen hier habe ich mir dieses Unterhemd bestellt! Vom ersten mal Anziehen war ich schlichtweg begeistert! Tolles kuscheliges Tragegefühl und eine gut sitzende anschmiegsame Passform. Fahre bis -5 Grad 3-5 Stunden mit diesem Baselayer und der Isadore Jacke. Kalt wird es nicht! Der Schweiss wird fantastisch abtransportiert und das Körperklima wird durch Merino super reguliert! Verwende es mittlerweile auch zum Joggen, wandern und im normalen Alltag!! Ein absolutes musthave und mein Lieblingskleidungsstück! Wunderbar dass es auch in Europa zu (hoffentlich) gerechten Lohnverhältnissen gefertigt wird. Abgesehen von der Fertigung ist das Leiberl noch in einer anderen Hinsicht nachhaltig: Man braucht es nur alle 3 Wochen waschen! ! Fängt nicht zu riechen an! ! Wirklich ein tolles Produkt! Outstanding!! Ich: Rennradfahrer 10.0000 KM pA // 180 cm/ 82 kg = Large anliegend = Xlarge lockerShow full review -
Best base layer you will ever use!
This is a bold statement I know, however its absolutely true. These base layers are outstanding and have become my number one item for every ride, ski, walk and generally anything outside! Super soft, they wick moisture away from the skin immediately, they don't leave a bad smell and wash very easily. I have been washing them a lot and after 5/6 months they are still in great condition. They are probably the most popular item in our cycling club. Buy the bundle and then 3 of each because you will use them and your friends will want some too! Another outstanding product from Isadore.Show full review -
Quality
Ordered this as my UnderArmour made me feel the chill when it was around 5 degrees. So having seen this get top marks in a cycling magazine I thought paying a bit for a better quality product was the way to go. Simply, it is very comfortable & keeps the chill completely off. Much better than the UnderArmour. I know price is always a consideration, but you pay for quality. I cant recommend this highly enough.Show full review -
The quality and feel of this is amazing, purchased it in the grey and it looks very stylish,keeps you warm yet still doesn't leave you sweaty. if this is the quality of the base layer then I can't wait to get my hands on the soft shell jacket, will allways be buying isadore gear from now on. Also love love the personal touch and the packaging, all in all great products and great companyShow full review
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esto si es segunda piel
acertado, 100% recomendable, en isadore gasto la xl, en esta prenda tenia que haber elegido la xxl,me queda un pelín justa(para que lo tengáis en cuenta pero lo use y... de todos modos , muy a gusto.Show full review -
Light, Comfort & Function
I have a few Isadore base layers now and I don't wear any other. The merino is soft and supremely comfortable. I always wear a base, even in summer (a vest), and these are excellent for wicking moisture away. They have no odour so you don't need to worry about the cafe stop. Wash them carefully (30 degrees maximum and use delicate cleaning agents) of course, and they stay like new.Show full review -
My boyfriend keeps stealing my clothes.
He is exactly my size and not only boroughs my baselayers but also my jackets, toe covers and gloves. This says much about the quality of the products, I guess, since his wardrobe is full with other stuff from different brands, too.Show full review -
Skvelé Merino
Nemal som zatiaľ až toľko skúseností s merinom, ale toto je naozaj vynikajúce. Vôbec, ale vôbec neškriabe, naopak je veľmi príjemné na telo. Ani neviem, že to mám. Vôbec nesmrdí po niekoľko-násobnom použití čo je super. Jediný problém menší, ktorý som našiel je, že by bolo dobré spraviť dlhšie rukávy resp. ich vyriešiť nejako inak.Show full review -
Roger
Great baselayer! I am 188, 77kg, chest 100cm with long arms. Size L works, but arms could be 2-3cm longer.Show full review -
Bernd
Eins der besten Kleidungsstücke im Laufe meiner Radsport-Ära. Tolles Material, jeden Cent wert. Ich liebe es.Show full review -
Lepšie na zimu som nemal
super kvalita ,len rukávy sú krátke a trocha veľký výstrih okolo krkuShow full review -
super
Možem len odporučiť super materiál.Len to logo na predku po prvom praní hneď bolo fuč..treba dať lepšie Ale inač len chválimShow full review -
Comfort long sleewe baselayer
Nice soft warm merino fabric which does not smell. I chose size L because of lenght. 182cm, 73kg, 97cm chest and it fits good as well. Normally I wear size M (Merino long sleewe jersey).Show full review -
Great base layer
One of best base layers. Material is awesome and it is also looks really nice. Some of the stitches are not that great so -1 star for that but overall really great product.Show full review -
Výborná základná vrstva
Výborná základná vrstva. Skutočne nehryzie nezapácha a vytvára ohromný pocit komfortu.Show full review -
Mr
Super ale kratke rukavy sa miz daju kvalitnejsie. Velkosti su trochu nevyspytatelne medzi dlhym a kratkym rukavom ... M a M nie je celkom totozne.Show full review -
Chaud
Sous couche qui fait bien le job. Température négative en ce moment , je le mets avec la veste Softshell Marsala et je n'ai pas froid. Très agréable à porter , doux et aucune couture qui gêne . Pris en taille L 1.81cm 70 kgShow full review -
Parfait
J'ai choisi ce maillot en noir , taille L (1.81m 71 kg) Il est très agréable a porter , ni trop chaud ni trop froid. On oublie même qu'on le porte. Essayé ce matin , température de 2 degrés avec une veste hiver par dessus , parfait . Le petit truc en plus , une ouverture en bout de manches pour passer le pouce et éviter que la manche remonte.Show full review -
Markus B.
Ich hatte noch kein Unterhemd, welches sich so angenehm angefühlt hat. Super sind beim langärmeligen auch die Daumenschlaufen. Der Baselayer schmiegt sich eng an den Körper und reguliert hervorragend Wärme und Feuchtigkeit. Obwohl ich die Trikots alle in M habe (187/74) passen mir die Baselayer in Größe L besser.Show full review -
Guido
Great Baseler. Warm and soft. What else should be there.......city rides to work or training....prepared against the coldShow full review -
Great undergarment
Really nice feel on the skin, the sweat is filtering nicely, I never stay wet. I wear it under my jersey and during the ride it's a perfect combination. Would prefer a bit wider sleeves thoughShow full review -
Herr
Very comfortable, no smell even after harder rides! Best base layer I've ever worn. Absolutely worth the price!Show full review -
Herr
Sehr angenehm zu tragen, schöne Verarbeitung. Wer es ebenso für den tagtäglichen Gebrauch nimmt, sollte es ev. eine Nummer größer nehmen. So habe ich es nach der Kaufberatung gemacht - passt perfekt.Show full review -
Stefan Ziegenhagen, Cologne Germany
checked a lot of base layers, no doubt this one is the best I've ever wornShow full review -
Thomas Bierbaum
Dieses Unterhemd ist sehr angenehm warm und weich, es hält den Körper warm und trocken, habe es jetzt im Winter als Baselayer bei kaltem, feuchtem und sehr windigem Wetter getragen und mich immer pudelwohl gefühlt. Sehr praktisch sind auch die Daumenschlaufen an den Enden der Ärmeln, beim Drüberziehen der nächsten Schicht und zum Abdichten am Handgelenk. Dieses Unterhemd ist so angenehm, ich trage es nicht nur beim Sport... Klare Kaufempfehlung.Show full review -
Kvalitne ale strih katastrofa
Aky expert sije tie merino natelniky? Kupil som si L ale mam ho ako damsky crop, rukavy su vytahane.. material je super ale to prevedenie ma sklamalo.Show full review -
Very good material and packaging, fit is a problem.
Too short to the point of not being practical, and neck opening too large, and arms too short. it's a shame because otherwise the color, material, construction, and remaining cut is perfect for a cyclists' body.Show full review -
Very nice style and fabric and good quality. Unfortunately, even though I followed the washing instructions, it has shrunk a little and I wish I had bought a bigger size.Show full review
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Fragile!
Nice for the first season but after a few uses in the second several holes appeared around the arms. I got size M, normally and S with the brands (rapha).Show full review -
Laurel
Hello, The wearing comfort is really great. However, after a few washes, the seams have come loose, so that the foldover of the shirt has dissolved in the lower area.Show full review
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