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Sizing chart

Men's Short Sleeve Jerseys

Designed to be close fitting using performance stretch fabrics that hug the body.

To find your size, use the "What's my Size" app and enter your own measurements.

Inches Centimeters
Size Chest Waist
S 33-36 31-33
M 36-39 33-35
L 39-42 35-37
XL 42-45 37-39
2XL 45-48 39-41
3XL 48-51 41-43
Size Chest Waist
S 84-90 80-85
M 90-98 85-90
L 98-106 90-95
XL 106-114 95-100
2XL 114-122 100-105
3XL 122-130 105-110
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8 Days Men's Pro Jersey

8 Days Men's Pro Jersey

Aero Profile
4.8
Rated 4.8 out of 5 stars
11 Reviews

Our highest performing jersey made from premium recycled fabrics, ultra lightweight feel, featuring aerodynamic sleeves, a low-profile collar, and 3 rear pockets and a YKK zip.

Regular price $129.95 USD

Size

Get 2 For $220 Pro Performance Jerseys

Automatically applied at checkout. Add the items to your cart and save!

Features

Comfort & Fit

Men's Short Sleeve Jerseys

Designed to be close fitting using performance stretch fabrics that hug the body.

To find your size, use What's my Size and enter your own measurements.

Description

The Cycology Pro Jersey delivers a breathable, ultra-lightweight ride designed for comfort, efficiency, and everyday performance. Made with premium recycled fabrics, aerodynamic sleeves and collar, and a streamlined performance fit, it keeps you cool and comfortable across a range of riding conditions

The Pro Jersey features a close fitting, performance fit that contours to the body for optimal comfort. Crafted from ultra lightweight, high-stretch recycled fabric, it delivers exceptional airflow and moisture control for warm conditions and long rides. The extended set-in aero sleeves enhance comfort, provide added sun protection, and contribute to a sleek, modern silhouette.

Ride-ready details include a low-profile collar, full-length YKK zipper for adjustable ventilation, and a rear hem gripper to keep the fit secure. Storage is handled by three rear pockets plus a zip pocket for essentials, while reflective detailing improves visibility in low light.

Built for riders who demand performance without compromise, the Cycology Pro Jersey offers a refined ride experience with comfort, breathability, and distinctive Cycology designs.

Product Care

By correctly taking care of your garments, you can increase their lifespan and maintain their performance, fit, and quality.

If you are not washing your garments right away, we recommend you let them air dry until wash day to prevent stains and odor-causing bacteria.

Top 10 Care Tips:

1. Close all zips, buttons, and Velcro on the garment.

2. Turn the garment inside out; this will help retain the vibrancy of colors and prevent piling.

3. Place the garment in a wash bag if possible to provide a protective layer.

4. Cold wash or warm cycle with similar colors is best. (max. 30°C / 86°F)

5. Use a small amount of gentle/mild detergent; stronger detergents can breakdown fibers and elastane in the garment, dramatically reducing its lifespan.

6. Do not use bleach, stain removers, or fabric softeners as they will destroy garment performance.

7. It's best to air dry your garment, but you may also use a dryer on a gentle cycle.

8. Do not tumble dry. The heat can break the fibers in the elastane, reducing its ability to be form-fitting.

9. Ensure your garment is completely dry before storing it. Best stored in a dry and well-ventilated place.

10. Follow the care instructions on each garment label.

Shipping & Returns

SHIPPING

Free Shipping on orders over $129. Shipping Fee: $9.95 for orders under $129. 

Delivery time after dispatch is 4-9 business days

Express Shipping fee is $20.00 with FedEx Express

Delivery time after dispatch is 2-3 business days within USA only

Please visit our Shipping page for more information on free shipping thresholds and rates for all other countries

RETURNS

We accept returns up to 90 days from the date of purchase. Please ensure the items you are returning are unworn, in the correct original packaging, and have the  tags attached.

Please note items can be exchanged via our Returns Portal or refunded as preferred.

Clearance items cannot be returned for a refund, nor exchanged.

Please visit our Returns page for more information.

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8 Days Men's Pro Jersey

Highest-performing jersey constructed from premium recycled fabric, ultra lightweight, aerodynamic sleeves, low-profile collar.
Regular price $129.95 USD

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  • Nathan G.
    Verified Buyer
    I recommend this product
    Age Range 35 - 44
    Performance Jersey Size Purchased XL
    How It Fits Fits Perfectly
    Rated 5 out of 5 stars
    10 months ago
    Awesome product

    I always wanted a cytology jersey, this one did not disappoint. Great quality, comfort and breathable. The design is awesome. I’ll be purchasing another 2-6 jerseys, I basically want them all!! There is a bit of room under the arms but that’s probably due to my skinny arms. Great product!

  • DOUGLAS P.
    Verified Buyer
    I recommend this product
    Rated 4 out of 5 stars
    10 months ago
    Shirt is nic!

    Your company is fair. Almost...never received socks for 99.00 dollar order. Was supposed to be free? So 5 star but because run around 3.5 to 4 star

  • Rhonda B.
    Verified Buyer
    I recommend this product
    Rated 5 out of 5 stars
    10 months ago
    Posh!

    I got this jersey for my husband in a timely manner. The Jersey is light weight and quality fabric. The sizing may run a little small. I usually get him a large but got an XL in this and it fits him well!

  • Mirjam D. R.
    Verified Buyer
    I recommend this product
    Age Range 55 - 64
    Performance Jersey Size Purchased 2XL
    How It Fits Runs Large
    Men's Jersey Size Purchased XL
    Rated 4 out of 5 stars
    1 year ago
    Men's Reborn Jersey

    Very colorful and striking shirt, fits great while cycling.

    Plenty of space in the back pockets.

    The sleeve circumference is also great for muscular arms.

    Translated from Dutch
  • GEORGIOS M.
    Verified Buyer
    I recommend this product
    Age Range 65+
    Performance Jersey Size Purchased XL
    How It Fits Fits Perfectly
    Men's Jersey Size Purchased XL
    Rated 5 out of 5 stars
    1 year ago
    8 days men's jersey

    all good