Alternative SL Baselayer

For the hottest rides, the Alternative Sleeveless Baselayer will offer the ultimate in soft, breathable moisture transfer from your core to the exterior of the jersey.

Explore More
60,00 USD
  • Free standard EU shipping on any order over 150 EUR
  • Express EU delivery 1-2 business days
Alternative SL Baselayer Black/White
Alternative SL Baselayer Black/White 60,00 USD

100% recycled material working to keep you cool

Product description

The Alternative Baselayer is made for warm, high summer rides, and works to keep the body temperature well-regulated and the skin dry. It accomplishes this with a snug, second skin feeling, and is so comfortable that you will forget you are even wearing a baselayer, even in the hottest temperatures. The fabric has been knitted from material that has been made from recycling waste products, and in compliance with the GRS International Certification. The printed design is stylish and understated. Extremely easy to wash and care for.

  • Produced from fully recycled ultra-lightweight mesh material
  • Treated with HeiQ®, innovative Swiss technology eliminating bad smells and odor in compliance with Bluesign®, and OEKO-TEX®, approved
  • Exceptional moisture wicking and temperature control
  • Designed by Martin Velits using his experience from the pro peloton
  • Made in the Czech Republic
  • 87% Multi-Filament Recycled Polyester
  • 13% Elastane

Size Guide


A - BACK LENGTH 67 – 69 69 – 71 71 – 73 73 – 75 75 – 77 77+
B - CHEST 84 84 – 88 88 – 94 94 – 100 100 – 106 106 – 114


A - BACK LENGTH 26,4 – 27,2 27,2 – 28 28 – 28,7 28,7 – 29,5 29,5 – 30,3 30,3+
B - CHEST 33 33 – 34,75 34,75 – 37 37 – 39,5 39,5 – 41,75 41,75 – 45

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.

Sizing guide


5 / 5
3 reviews

  • Alternative Long Sleeve

    Roger Murer, Switzerland, 7.11.2021 (Alternative LS Baselayer Black/White)

    This is my comment to the long sleeve shirt: It is thicker than the short sleeve summer shirt. It feels very nice on the skin and protects very well on cold rides with a long sleeve jersey. I am 188cm/78k - chest 100cm and ordered XL it sits nice on the body without being tight. The sleeves could be 2 to 3cm longer, but since it is a base layer it works as is. I'd purchase an other one right away.
    Show full review
  • Roger

    Roger Murer, Switzerland, 30.11.2020

    I love this shirt. It is very light and very soft on the skin.
    Show full review
  • Light baselayer for warm summer rides

    Tine Peter, Germany, 11.10.2020 (Women's Alternative SS Baselayer Black/White)

    I am very happy with this baselayer. It is very light and keeps you cool during hot summer rides.
    Show full review

Related Products

100% Merino SL Baselayer Black
100% Merino SL Baselayer Black
+ Quick Add
100% Merino SS Baselayer Black
100% Merino SS Baselayer Black
+ Quick Add
100% Merino LS Baselayer Black
100% Merino LS Baselayer Black
+ Quick Add
48 Reviews
85,00 USD
Ovada Deep Winter Baselayer Black
Ovada Deep Winter Baselayer Black
+ Quick Add
13 Reviews
115,00 USD

Vibes from the road

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