Castelli Climber's 3.0 SL Short Sleeve Jersey (Dark Steel Blue) (XL)

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The Castelli Climbers 3.0 SL Jersey is light, dry, and fast. Racing in the Alps in July is for a select few, but the products that come out of that experience are absolutely amazing for the rest of us. Castelli made this jersey with Team Ineos for the rigors of pro racing in hot weather and in the high mountains. It's extremely lightweight and features open fabrics for additional airflow and quick drying. And by using the same patterning as the Aero Race Jersey, you get maximum aerodynamics as well. Even if you don't race over the Galibier this summer, you'll love the soft stretch and great fit of this jersey, and you'll appreciate how it keeps you cool on the hottest days. Maybe you'll even do like the pro riders do and use it on wet days because it doesn't soak up any moisture. And you'll certainly appreciate that the fabric on the back blocks more than 90 percent of UV rays.

Created for the hottest days, this jersey allows ample airflow, is quick to dry and blocks more than 90% of UV rays on your back. A great choice for your long summer rides, or add a base layer and it's a three-season jersey.


  • CFD-based fabric placement and seam construction
  • Engineered rapid cooling, light weight and aero efficiency
  • Airflow shoulder construction
  • Flusso 3D fabric on front and sleeve
  • StradaPro 3D back for breathability
  • Elbow-length stretch sleeves with raw-cut edge
  • YKK┬« Vislon┬« zipper
  • Drop tail for perfect pocket placement while keeping jersey fitting well at waist
  • Weight: 107g

Gender: Men
Manufacturer Fit: -
Fabric: Flusso/StradaPro 3D
Zipper: Full Length
Pockets: 3 Rear
Sleeve Length: Short Sleeve
Color: Blue

This product was added to our catalog on February 17, 2021

Verified Owner
Tuesday, Oct 12 2021 (7 weeks ago)
Castelli Climber's 3.0 SL Short Sleeve Jersey (Dark Steel Blue) (L)
This is a repeat purchase of this excellent jersey from Castelli. Trim fit with comfortable and functional neck, arm and waist openings. Comfortable fabric texture avoids "slimy" feeling of some other fabrics when sweaty. Sleeves are bit longer than some with very good distributed compression. Full zipper is great. Note: pay attention to the sizing chart; it's bang-on (I'm 5'11" and 155 and the recommended Large is perfect).
Friday, Jul 16 2021 (4 months ago)
Castelli Climber's 3.0 SL Short Sleeve Jersey (Dark Steel Blue) (M)
I like how light the fabric is. Great for hot 90+ degree riding. The fit is really small though. In Specialized or Pearl Izumi I wear an XS, but the size small in this is almost too small. Could possibly wear a medium. Definitely size up at least one size.
Verified Owner
Tuesday, Apr 13 2021 (8 months ago)
Castelli Climber's 3.0 SL Short Sleeve Jersey (Dark Steel Blue) (M)
VERY tight fit. I usually always wear a medium but this was definitely way too small. Sent it back but don't think I will exchange as the material just seems so lightweight and thin that I am not sure how it will hold up with time. I could be wrong, but that's just a first impression. Also, the collar is more open than I prefer but I suppose this is specifically meant for hot weather....

Measurement Guide:

  1. Chest: Measure the circumference around the fullest part of chest, under arms
  2. Waist: Measure circumference around natural waistline keeping the tape a bit loose

Circumference (in)
Circumference (in)

Castelli Sizing: Many Castelli products are designed with a European race-fit. It is not uncommon to size up one or two sizes for the right fit.

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired. Castelli instructs that for best results measurements be taken over underwear. Castelli recommends sizing up if measurements fall between sizes for a better fit.