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Alpha Ros - Thermo Jacket
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Alpha Ros - Thermo Jacket
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Item no.: 20076543
  • Description

    Castelli Alpha Ros - Thermo Jacket

    This jacket comes very close to the goal of perfect functionality in dry conditions combined with protection in the rain. The use of the Gore® Windstopper® membrane, partially sealed seams and a waterproof YKK® Vislon® zipper has made it essentially waterproof without compromising in dryness.

    Comfortable protection in dryness and rain: the Alpha Ros thermal jacket from Castelli

    Until now, bike clothing was known to be suitable for either dry or damp weather. Hardly anyone would think of using rainwear in dry conditions. It just feels uncomfortable and not streamlined. The Alpha RoS jacket fills this gap.

    The starting point was all the proven features of Castellis jackets: separate insulation and outer layer for individual temperature and moisture management control, excellent breathability, flat cuffs on arms and waist, split collar, comfortable materials and an excellent fit.

    Castelli conducted tests in the most adverse autumn weather. A few drops of water penetrated into the interior. Nevertheless, you stay warm and dry because this jacket offers comprehensive weather protection and lets body moisture quickly escape to the outside.

    Features - Alpha Ros

    • Rain or Shine engineering provides insulation and breathability for cold and dry rides, with effective waterproofing for wet rides
    • Gore® Windstopper® 150 fabric provides wind protection with high breathability and effective rain protection
    • Seam sealing on shoulders, reduced seaming and double stitching keep you mostly dry
    • Alpha construction separates wind/water protection layer from insulating layer
    • Better ventilation and better moisture evaporation thanks to separate insulating layer
    • Partially covered waterproof YKK® Vislon® zipper slides easily and lies flat
    • Raw-edge waist lies flat and moves with you
    • Raw-edge wrist cuffs lie flat for a perfect interface with gloves
    • Stretch fabrics with advanced patterning make for an excellent close-to-body fit that still accommodates a wide range of body types
    • 3 rear pockets with reflective laser-cut drain holes
    • Weight: approx. 515 g
    • Recommended temperature range: -5°C to +10°C


    Castelli’s Rosso Corsa label is only applied to the highest-level products they make. Every thread and fiber, every curve and contour is obsessed about. Rosso Corsa represents a categorical breakthrough in cycling innovation and the meticulous craftsmanship you expect from Castelli’s performance-enhancing apparel.

    Gore® Windstopper®
    This soft, 4-way stretch Gore® Windstopper® fabric is extremely lightweight and breathable.

    • Breathable outer and inner shell keeps the wind out
    • Gore® Windstopper® technology makes it ideal for use in cool weather
  • Details


    Main material: 100% Polyester
    Bottom Torso: 70% Polyamide, 30% Elastane
    Lining: 90% Polyester, 10% Elastane
    Cuffs: 72% Polyamide, 28% Elastane
    Collar: 86% Polyester, 14% Elastane
  • Specifications


    Manufacturer: Castelli
    Women/men/unisex: Men
    Fit: Slim Fit
    Use: Road Bike
    Washability: 30°C
    Wind protection:
    Temperature range: -5°C to +10°C
    Colour: silver gray/black
    Weight: approx. 515 g
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