Castelli Alpha Ros Jacket - Women's 5054-374
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Castelli Alpha Ros Jacket - Women's

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Show Description

Meet the Ros (Rain or shine) cycling jacket that’s true to its name. Supportive in cold weather, this windproof, water-resistant layer seals out the elements. Inside, a thermal layer boosts warmth. Dual zippers are a real game changer: close just the interior when you need some venting, zip up the outer layer when you need extra protection going downhill.

  • Gore Windstopper® 105 LLR fabric provides great wind protection, breathability plus moderate waterproofness.
  • Sealed seams keep you dry in critical areas.
  • Sewn-in stretch fleece inner insulation has its own zip.
  • Stretch fabrics and advanced patterning provide a close-to-body fit in the ride position.
  • Waterproof YKK Vislon external zipper has a partial storm flap to keep out rain.
  • Back vent lets you vent heat on big climbs.
  • Raw edge wrist cuffs interface with gloves so there's no gaps to let in wind.
  • Silicone gripper hem lies flat and won't ride up.
  • 3 rear pockets have laser-cut drain holes.
  • Front pocket has a waterproof zip.
  • Castelli recommends this jacket as best for temperatures between -5 and +10°C.

Tech specs

Show Tech specs
Ideal for Road cycling
  • Waterproof-breathable
  • Soft shell
Technology GORE-TEX Windstopper
Construction 3-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 critically taped seams
  • 3 back drop-in
  • 1 front zippered

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.

Venting Back vent
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 Romania