Castelli Squall Shell Rain Jacket 2026

The Castelli Squall Shell 2026 rain jacket is designed for road cycling in rain and cold winter weather. It protects you from water, spray and wind on descents, and folds into a jersey pocket.

• Keeps you dry in the rain, with a waterproof rating of approximately 15,000 mm
• Two-layer construction with a waterproof membrane to protect against water and spray
• Shields you from wind on descents, useful for winter training and commuting
• Weighs just 0.114 kg and folds into a jersey pocket
• Sizing runs small: choose one size larger than your usual size

Technical specifications

• Material: 100% polyester
• Weight: 0.114 kg
• Waterproof rating: Approximately 15,000 mm
• Construction: Two layers with a waterproof membrane
• Fit: Slim/athletic cut, sizing runs small: one size up recommended
• Intended use: Road cycling: rain, spray and wind on descents
• Season: Winter
• Packability: Foldable, fits into a jersey pocket
• Colour: LIGHT BLACK/SILVER GRAY
• Sizes: S, M, L, XL, XXL, XXXL

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.