Alternative Ultralight Long Sleeve Jersey

Alternative Ultralight Long Sleeve Jersey

Regular price $117.00
Regular price $195.00 Sale price $117.00
Color: Fallen Rock
Select Size Size Guide
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Free & Easy Returns

Isadore merges functionality with sustainability in the Alternative Ultralight Long Sleeve Jersey. Conceived for high-tempo rides during spring and autumn and harnessing the benefits of recycled materials, this long sleeve jersey excels at moisture management and breathability, as its tri-mesh composition supports high-performance. Offering medium to high compression, a streamlined cut for aerodynamics, and a form-fit that achieves a second skin feel, this jersey aims to transform your ride. The attention to detail extends to its flat seam construction ensuring comfort, and the added utility of a wide, silicone band to hold the jersey styled in place even under maximum load.

  • Exceptionally lightweight
  • Italian GRS® certified recycled materials
  • Medium to high compression
  • Mechanical YKK® Natulon® zippers
  • Hem secured with extra-wide recycled elastic band
  • Body temperature regulation optimal for 50°F - 70°F
  • Perfectly suited for spring and autumn riding
Size & Fit

  • Fits true to size, choose your regular size
  • If you have a slim frame (typically XS or S) and would like a second-skin fit we recommend sizing down from your normal size
  • Firm, close fit
  • Stretch fabric freedom of movement
  • Model is 5'9", 143 lbs, and wears size XS
  • For accurate measurements, consult the brand's size guide

    Size Guide

Material & Care

  • Fabric 1: 87% recycled polyester, 13% elastane
  • Fabric 2: 93% recycled polyester, 7% elastane
  • Fabric 3: 90% recycled polyester, 10% elastane
  • Fabric 4: 77% recycled polyester, 23% elastane
  • Machine wash cold
  • Use gentle detergent
  • Do not use fabric softener
  • Dry garment inside out in shade
  • Made in the EU

Brand Info
Brothers and professional cyclists, Martin and Peter Velits, founded Slovakian brand Isadore, in a desire to create timeless and sustainable cycling apparel that celebrate the adventurous spirit of the sport. Taking into account cyclists' daily routes and lifestyles, the brand's design process addresses usability and versatility, anticipating riders' needs across seasons. Relying on natural materials and minimizing carbon footprint, the label remains mindful of sustainably and safe work environments, using factories that work within OEKO-TEX® and Bluesign® standards, and ensuring a healthy planet to ride in.
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Free U.S. shipping

We offer free express shipping on all U.S. orders. Orders are shipped via all major carriers (UPS, DHL, FedEx, USPS) and should arrive within 3 to 5 business days.

Processing time

Most orders are shipped within 1-2 business day. Processing time is in addition to transit/delivery time. Once your order ships you will receive a confirmation email with your shipment and tracking details.


If you order multiple items, you may get multiple deliveries. We’ll send you a shipping confirmation email for each shipment along with shipping notifications throughout transit so you’ll know exactly what to expect and when to expect it.

P.O. Boxes and APO/FPO

At this time we do not ship to P.O. Boxes or APO/FPO addresses.

International shipping

At this time, we are not able to ship to countries outside the U.S.

Possible delays

We do our best to ensure the timely delivery of all orders. Please keep in mind that we are only provided with an estimated delivery date from our carriers and cannot guarantee delivery estimates.


Free 30-day returns on all U.S. orders

If you are not completely satisfied with your purchase or you simply wish to return it, you have 30-days from the day your order was delivered to send it back to us. Returns are complementary and hassle-free. All products must be returned in a new and unused state, in perfect condition, and with all original tags attached.


To make an exchange, visit our portal and enter your order number and shipping zip code. From there, select the item(s) you would like to exchange. If you would like to exchange for a completely different item, please reach out to us.

How to make a return?
  • Click here to start your return or simply log in to your account
  • Enter your order number, email or zip for identification and click “Get Started”
  • Select the items you want to return from your order and select the return reason
  • Select your return credit option: Refund or Store Credit and click “Complete”
  • Download our pre-paid Return Label and attach it to your package (remove or cover any previous shipping labels to avoid shipping delays)
  • Drop off your return at any USPS location. Make sure to keep your receipt
Final-Sale items

Items marked "Final Sale" cannot be returned once purchased.

Refund processing

Returns are processed within 3-5 business days after they arrive at our warehouse. Refunds will be credited to the original form of payment, and a confirmation email will be sent to you once it has been issued. It may take up to 7 additional days for the funds to show in your account.

Late or refused returns

Your item(s) should be sent back to us within 30 days of receiving you order. Returns outside this timeframe may be accepted at our discretion and may only be refunded as a store credit. We reserve the right not to accept returns if the product shows signs of wear or has been used or altered from its original condition in any way.


All shoes should be tried on a carpeted surface and returned in a new, unused condition with the original tags, shoe box, and packaging. Cleats should not be installed on cycling shoes. Returns without a shoe box, in a damaged shoe box, or with scratched soles will not be accepted and will be sent back.


Alternative Ultralight Long Sleeve Jersey

  • Fits true to size, choose your regular size
  • If you have a slim frame (typically XS or S) and would like a second-skin fit we recommend sizing down from your normal size
  • Firm, close fit
  • Stretch fabric freedom of movement
  • Model is 5'9", 143 lbs, and wears size XS
  • For accurate measurements, consult the brand's size guide

Isadore Men's Size Guide

US / INT (International) XXS XS S M L XL XXL 3XL
Chest < 33.4
Waist < 27.8
< 34.6