Castelli Estremo

There appears to be a misunderstanding. The provided text describes the Castelli Estremo jacket, not a helmet. The Estremo jacket is a high-performance winter cycling garment designed for demanding conditions. It is not a helmet.

The jacket features:

• GORE-TEX WINDSTOPPER® X-Fast material: Offers windproof, water-repellent, and breathable protection.
• Fleece lining: Provides comfortable warmth.
• Inner wrist closure: Ensures a seamless interface with gloves.
• YKK® Vislon® zipper: A durable and smooth-operating zipper.
• Three large back pockets: Ample storage for essentials.
• Reflective flap on pockets: Enhances visibility in low-light conditions.

Technology Highlights:

• GORE WINDSTOPPER® Technology: This soft, 4-way stretch material is lightweight and breathable while offering excellent wind protection. It's ideal for cool weather riding.

Recommended Temperature Range: -3°C to 10°C (27°F to 50°F)

Weight: Approximately 403g

In summary, the Castelli Estremo is a high-quality winter cycling jacket, not a helmet, offering superior protection and comfort in cold and windy conditions.