Castelli Idro 2 Jacket - Men's 5057-059

Castelli Idro 2 Jacket - Men's

Size Guide

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Show Description

Hyper-light and totally waterproof, the Idro Jacket raises the bar for a high-performance cycling shell. You can stuff it into an already packed jersey pocket, and it weighs in at 107 grams (lighter than any smartphone). The miracle is the game-changing fabric that puts the super breathable membrane on the outside. The unique system means the fabric won't absorb moisture and doesn't require DWR treating, yet it's still incredibly breathable.

  • GORE-TEX® Active Shakedry 2-layer fabric has an external membrane for breathability, waterproofing and weight reduction.
  • Fully taped seams.
  • Full-length water-resistant YKK Vislon zipper.
  • Anatomic, shaped cuffs and hem with low-profile elastic binding for a secure fit.
  • Reflective elements for low-light visibility.
  • Streamlined, slim fit is optimized for the ride position.
  • Castelli recommends this jacket for temperatures between 6 and 20°C.

Tech specs

Show Tech specs
Ideal for Road cycling
Type Waterproof-breathable
  • GORE-TEX Active
  • GORE-TEX Shakedry
Construction 2-layer

Waterproof garments use waterproof-breathable technologies and are fully seam-taped. Water-resistant garments use waterproof-breathable technologies but their seams are not taped. Water-resistant garments repel water and protect against wind but are not made of waterproof fabric.

Waterproof with fully taped seams
Pockets None

A windproof garment does not allow any air to permeate the fabric. A garment with windproof panels has panels of fabric that are totally windproof, but the rest of the garment may not be windproof. A wind-resistant garment resists some wind, but not as much as a garment that is windproof.

Length Hip-length
Durable water repellency

Usually referred to as DWR. A treatment made to fabrics that causes water to bead and run off instead of soaking through.

Made in Italy