Castelli Idro 2 Jacket - Black


The smallest, lightest gore-tex jacket.

This jacket can change the way you ride. It’s so small you’ll find yourself stuffing it in your pocket for rides with even a remote chance of rain, just because it takes up so little space. And you’ll be extending your rides into conditions when rain is in the forecast because you know you’ll be perfectly covered. Using Gore’s newest SHAKEDRY™ two-layer fabric, we constructed the most minimalistic jacket that still covers your needs. It fits over your jersey and vest. It covers your tail. It has a tall collar. It has a YKK® Vislon® waterproof zipper. It has reflectivity. But that’s about it. Compared to the Idro Pro jacket, this one is made to go in your pocket for every ride, yet still provide the essential protection when called into duty.


  • The lightest Castelli GORE-TEX® Product ever made
  • Durably waterproof and long-lasting weather protection backed by the GUARANTEED TO KEEP YOU DRY™ promise
  • GORE-TEX® SHAKEDRY™ product technology
  • Folds into just half a pocket
  • YKK® waterproof Vislon® zipper
  • Anatomic wrist closure
  • Reflective Castelli wordmark


  • Windproofness
  • Waterproofness
  • Insulation
  • Breathability
  • Lightweight
  • Road
Cycling Clothing Fit:
  • Race Fit
Clothing Feature:
  • Windproof
  • Waterproof
  • Reflective
  • 6°C to 10°C
  • 11°C to 15°C
  • 16°C to 20°C
  • AW20
  • Castelli

How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is:

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If I'm not completely happy with my item?

Please see our returns policy.

Customer Reviews

Overall Rating : 4.67 / 5 (3 Reviews)
  • 2 5 star reviews
  • 1 4 star reviews
  • 0 3 star reviews
  • 0 2 star reviews
  • 0 1 star reviews

Top Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.

Brilliant but ££££

Light and packs incredibly small, breathable and most importantly - keeps you dry! I'm shinny 5'10" and wear a small which has plenty of length in sleeves and body, can get it on/off over gloves. The only negatives are a) It only comes in black b) cost; But you get what you pay for.

Super light

Have not had a chance to use in the wet so far, but the jacket is super light and keeps the wind out extremely well. No insulation though, but that’s to be expected. I got Medium (173cm, 67kg) and it’s a good fit around the shoulders and arms, but a little loose across the chest - might be better when I have to wear more layers though. Packs up really, really small so takes up very little space. Cuffs are a bit tight to get on - no elastic so won’t go on over gloves which means you have to take them off each time you pull the jacket on or off which is a pain. Otherwise excellent.

Simply the best

I have been cycling for 40 odd years now and the kit available now is outstanding. This is one example. A rain jacket that weighs next to nothing, fits in a back pocket and (once on :-))keeps you perfectly dry through everything - and we've had a few good rainfalls lately. Not only that but its breathable too. The Idro lives up to the hype and its well worth the cost.

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