Castelli Alpha 150 Winter Jacket 2026

The Castelli Alpha 150 winter cycling jacket is designed for riding MTB or road bikes in cold weather. It accompanies you on rides between -5 and 10 °C, with optimal conditions between 2 and 10 degrees.

• Protects you from the cold, with an operating temperature range of -5 to 10 °C
• Outer layer made from Castelli's proprietary Polartec AirCore membrane
• Polartec Alpha lining to keep your body warm while cycling
• Suitable for MTB and road bikes in a single garment
• Choose from sizes XS, S, M, L, XL and XXL

Technical features

• Gender: Men's
• Series: Castelli RoS
• Outer layer: Polartec AirCore membrane
• Lining: Polartec Alpha
• Operating temperature: -5 - 10 °C
• Bike type: MTB / Road Bike
• Sizes: XS, S, M, L, XL, XXL
• Colour: Light Black

Castelli’s roots lie in Vittore Gianni’s tailoring shop, founded in Milan in 1876; Maurizio Castelli created the scorpion brand in 1974. Today it is based in Fonzaso and makes clothing for your rides, from jerseys to shorts. In 1977 it introduced aerodynamic Lycra shorts, used in racing and sold to the public.