Debut Merino Air Jersey

Lightweight and breathable merino jersey with effective thermoregulation for summer riding.

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Merino wool is soft to the touch and prevents overheating even during hot summer days, maintaining its properties even when sweating. Silicone tape all around the entire lower perimeter keeps the jersey in place, and 3 back pockets provide plenty of room for snacks and small valuables. Complete with one-way YKK™NATULON® zipper and reflective logos. We used leftover materials from previous seasons, including zippers and silicone tapes, to make this jersey an extremely environmentally friendly piece.

110,00 USD
Bright White
Size Guide
  • Free standard EU shipping on any order over 150 EUR
  • Express EU delivery 1-2 business days
4 way stretch 4 way stretch
Moisture wicking Moisture wicking
Breathable Breathable
Thermal regulation Thermal regulation
Quick drying Quick drying
3 large pockets 3 large pockets
3D texture 3D texture
Silicone at the bottom Silicone at the bottom
Reflective graphics Reflective graphics
Antibacterial Antibacterial
Merino wool Merino wool
Lightweight Lightweight

Features

  • 3 spacious back pockets
  • Reflective Logos

Materials

  • 90% Polyester
  • 10% Merino Wool
Merino wool Merino wool

Complete the look

Light Sleeveless Baselayer White
Light Sleeveless Baselayer White
  • New
Light Sleeveless Baselayer 2 colors
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65,00 USD
Debut Bib Shorts Black & White
Debut Bib Shorts Black & White
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Debut Bib Shorts 3 colors
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Echelon Socks 6 colors
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Debut Merino Air Jersey Bright White
Debut Merino Air Jersey Bright White 110,00 USD

Size Guide
Fit Guide

MEASUREMENT XXS XS S M L XL XXL 3XL
A – Chest < 85 85-91 91-97 97-103 103-109 109-115 115-121 121-127
B – Waist < 73 73-79 79-85 85-91 91-97 97-103 103-109 109-115
C – Hip < 88 88-94 94-100 100-106 106-112 112-118 118-124 124-130
D – Arm length < 72 72-74 74-76 76-78 78-80 80-82 82-84 82-84
E – Inseam length < 76 76-78 78-80 80-82 82-84 84-86 86-88 86-88
Measurement points:
Chest – circumference measured in widest place
Waist – circumference measured in narrowest place
Hip – circumference measured in widest place
Arm length – measured from neck line to wrist
Inseam length – measured from crotch to ankle

Please note that given measurements apply to average body proportions. When chosing a size, please consider specifics of your own body.

Weight / Height 159-164 cm 165-170 cm 171-176 cm 177-182 cm 183-188 cm 189-194 cm 195+ cm
W 60-66 kg XS XS XS XS XS
W 67-72 kg XS XS S S XS
W 73-79 kg M M S M
W 80-88 kg XL L M M L
W 89-98 kg XL XL L L XL
W 99+ kg 3XL XXL XXL 3XL


Low to Medium Compression

A relaxed fit, allowing for full freedom of movement without compromising on performance. Designed for every day rides, where comfort is key.
Sizing guide
Sizing guide

Product Reviews

5 / 5
17 reviews
  • Submitted 5.9.2025

    By Christoph Schade

    AMAZING

    It fit‘s perfect and a realy high quality.
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  • Submitted 15.5.2025

    By Daniel

    Another great jersey

    Like all jerseys I own from Isadore, it fits like a second skin. I am 75kg and 1.78m and wearing size S. It fits tight but still comfy. Great fabric and style. I am happy that Isadore still offers plain, decent designs. The only thing I am missing is a small zipper pocket for my key/money/cards. Also the smell is very industrial. Combines nicely with the Light Sleeveless Baselayer in size S.
    Show full review
  • Submitted 12.5.2025

    By Pawel Verified buyer

    From Poland

    Nice jersey

    Really comfortable summer jersey. Great fit, close to body, almost like second skin.
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  • Submitted 20.4.2026

    By Michał Ożibko Verified buyer

    From Poland

    nice material

    material is really soft with air effect mean works in hight temperature, I don't have typical cycling upper body (gym body) but fit very well
    Show full review
  • Submitted 6.4.2026

    By Flo

    Great Product

    love the blue colour. very comfty to wear!
    Show full review

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Debut Merino Air Jersey

Understanding where clothes come from is as important as their final quality, features, and design.
Origin of raw material

Origin of raw material

Merino wool from Australia - yarns from Germany / Polyester from Spain

Country of origin of the fabric

Country of origin of the fabric

Skutec, Czech Republic: Oeko-Tex® Standard 100

Country of origin of the finished product

Country of origin of the finished product

Final product from Romania with Oeko-Tex® Standard 100 compliant