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Castelli Alpha Flight RoS Polartec Men's Cycling Jacket, Belgian Blue/Pompeian Red-Rock

Castelli Alpha Flight RoS Polartec Men's Cycling Jacket, Belgian Blue/Pompeian Red-Rock

Castelli's best jacket for mild conditions.

Reference 4523506_424-L

€269.95

€161.97 Save 40%

VAT included

Clothing Sizes: L

Colour: Blue

Blue

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N.1 in Italy in the Bike and E-Bike Shops

Castelli's best jacket for mild conditions. This lightweight, super-breathable, and extremely fast jacket is great for high-intensity rides or staying at the right temperature in cool conditions. Alpha construction with membraneless outer layer and Polartec® Alpha inner insulation.

PRODUCT FEATURES
Nano Flex Light woven fabric on chest, sleeves, and upper back partially blocks wind, but lack of a membrane guarantees maximum breathability
Alpha double-layer construction separates wind-block layer from insulation layer, allowing better ventilation and temperature management
Water-repellent finish
Polartec® Alpha active insulation on chest, sleeves, and back for extra warmth
Nano Flex Extra Dry on back for more ventilation, allowing heat and sweat to escape while shedding rain thanks to a nanotechnology water-repellent finish
Off-set Double YKK® Vislon® front zippers
Zipper pocket on side to secure valuables
3 rear pockets with laser-cut drain holes
Raw-edge waist lies flat and moves with you

TECHNICAL FEATURES
Insulation: 3/5
Waterproofness: 4/5
Windproofness: 3/5
Breathability: 4/5
Lightness: 4/5

Weight: 270 g
Temperature: 6°C - 16°C / 42°F - 61°F
Fit: Performance

Reference 4523506_424-L

Data sheet

Gender: Men
Material: Polartec
Code: CASTW2324
Season: Winter
Protection: Waterproof
Windproof
Use: Cycling
Technology: Polartec

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Who it is for and how to use it

Ideal for

Cyclists racing at high intensity

Designed for riders pushing hard in mild conditions who want a technical jacket with good heat and sweat management.

Men wanting light, breathable protection

Suitable for those looking for a 270 g garment with lightweight construction, active insulation and high ventilation.

Riders in cool but not extreme conditions

Suitable when maintaining body temperature is needed without giving up good moisture evacuation.

Use cases

Ideal

Intense rides in mild weather

The Alpha construction and Nano Flex Light woven fabric help manage heat and ventilation during hard efforts.

High-intensity rides · Mild conditions · Nano Flex Light woven

Very suitable

Training in wind and light rain

The water-repellent finish and rain-/wind-protective setup provide useful protection when the weather is changeable.

Rain protection · Wind protection · Water-repellent finish

Very suitable

Long rides requiring sweat management

The Nano Flex Extra Dry back panel and the rear pockets with laser-cut holes help with moisture and water release.

Ventilation · Rear pockets · Laser-cut holes

Suitable

Road bike use in mid-season

The Performance fit and the construction details make it suitable for riders looking for a close-fitting, stable garment in the saddle.

Performance fit · Road bike · Mid-season

Who it is for

Experienced cyclist looking for a technical training jacket

Looks for: A lightweight, breathable jacket with moderate protection.
Why: The combination of Polartec® Alpha, Nano Flex Light woven and Performance fit supports hard rides in mild conditions.

Frequently asked questions

What use is this jacket designed for?

It is designed for high-intensity rides and mild conditions. The construction favours ventilation and temperature management during effort.

What level of thermal protection does it offer?

Thermal protection is 3/5. It indicates support suited to cool conditions, without heavy insulation.

How much does the jacket weigh?

The weight is 270 g. This is consistent with a lightweight garment for technical riding.

What fit does it have?

The fit is Performance. This indicates a cut designed to sit well in the riding position and follow movement.

How does it perform in the rain?

Waterproofness is 4/5 and the finish is water-repellent. It offers useful protection in changeable conditions, without indicating use in heavy, continuous rain.

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What main fabric does it use?

The specified fabric is Nano Flex Light woven. It is paired with the Alpha construction to support breathability and temperature regulation.

Information prepared by the BSA team with the support of AI, based on the manufacturer's specifications.

Castelli Alpha Flight RoS Polartec Men's Cycling Jacket, Belgian Blue/Pompeian Red-Rock

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