Castelli Estremo

For the warmest overshoe you’ve ever designed, some key points had to be fundamentally reconsidered. For comprehensive wind protection, we rely on Gore-Tex Infinium, a fleece-lined material that is also more breathable than any other windproof fabric. Additionally, a layer of Polartec Power Stretch Pro is used. Due to the generally relatively thick construction, only a thinner layer is used in the toe area to avoid interference with the crank arm. For maximum warmth, this model is cut very high and also features solid splash protection. For the highest comfort, we recommend the Venti Soft Sock. The warmest Castelli overshoe for extreme conditions. Windproof and water-resistant Gore-Tex Infinium Windstopper material with optimal breathability. Polartec Power Stretch Pro lining for pleasant warmth. Reflective details ensure good visibility. YKK AquaGuard zipper. Extremely durable material on the sole.