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Castelli Men

Men's Idro 2 Jacket

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Have you lost weight?

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® SHAKEDRYâ„¢ 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.

Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.


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