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Castelli Men

Castelli Men's Idro 2 Jacket

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The Castelli Idro 2 Jacket improves upon the original Idro's design, retaining the Gore Tex Shakedry fabric's incredible waterproofing with an even lighter weight design. Weighing in at just 107 grams, the Idro 2 shaves 16 grams off the original without impacting waterproofing or breathability. Not only is it lighter, but it also folds down to be more compact, taking up only half of a rear pocket to leave space for tubes, nutrition, or other ride essentials.

Castelli features a Euro-inspired fit pattern, and as such we recommend sizing up one size from other brands. For example, if you wear a medium jersey in other brands, it's recommended to buy a size large in Castelli.


  • GORE-TEX® SHAKEDRY™ 2-layer ultralight waterproof breathable fabric.
  • Durably waterproof and long-lasting weather protection backed by Gore.
  • Folds into just half a pocket.
  • Full length YKK waterproof VisIon Zipper.
  • Anatomic wrist closure.
  • Reflective Castelli wordmark for improved low light visibility.
  • Weight: 107g.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.


Sleeve Type: Long Sleeve 

Black - Small

Mfg PartNum: B18030010-2 

Black - Medium

Mfg PartNum: B18030010-3 

Black - Large

Mfg PartNum: B18030010-4 

Black - X-Large

Mfg PartNum: B18030010-5 

Black - 2X-Large

Mfg PartNum: B18030010-6 

Ordered by Most Relevant First
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1 stars
Reviewed 8/6/2020
by Anonymous
Seattle, WA
Overall Rating
1 of 2 customers found this review helpful.
Delicate, lightweight full rain protection

I would give this 5 stars but due to how fragile the Shakedry fabric is, it limits where you can use this jacket. I would not use this mountain biking or use it while carrying a backpack due to concerns about ripping or wearing down the fabric. For road bike use, this is a perfect jacket for full rain protection!

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