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One-of-a-kind Giacca Castelli Fly Sey - Nero While Supplies Last [KhljENZJ]

$26.99 $86.99 -69%

Introducing the Castelli Fly Sey Jacket The Castelli Fly Sey Jacket is a versatile piece designed for those uncertain days when you need a bit of extra warmth without the bulk of a traditional jacket. This innovative jacket strikes the perfect balanc

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One-of-a-kind Giacca Castelli Fly Sey - Nero While Supplies Last [KhljENZJ]

Introducing the Castelli Fly Sey Jacket

The Castelli Fly Sey Jacket is a versatile piece designed for those uncertain days when you need a bit of extra warmth without the bulk of a traditional jacket. This innovative jacket strikes the perfect balance between a light sweater and a full-fledged jacket, offering protection for every weather event. Crafted with Castelli's cutting-edge FLY Fabric Technologies (FFT), the Fly Sey provides an unmatched combination of warmth, protection, and lightweight comfort.

Key Product Features and Specifications

The Fly Sey Jacket is engineered with a superlight construction that delivers incredible warmth and protection. Its adjustable collar allows you to regulate your temperature, whether you prefer a low-profile design or a full collar. Key features include:
  • Superlight Construction with incredible warmth and protection.
  • Adjustable Collar for temperature regulation.
  • Castelli FLY Fabric Technologies (FFT) for advanced performance.
  • Internal GORE-TEX INFINIUMTM WINDSTOPPER lining for windproof protection.
  • CLIMA SL insulation for enhanced warmth.
  • FLY SL Shell for wind and rain protection.
  • 100% post-consumer recycled exterior and lining materials.
  • YKK® Vislon® zipper with superior durability.
  • Three rear pockets with a secure zippered pocket.
  • Elastic and silicone waistband for a secure fit.
  • Reflective strips for increased visibility.

Practical Uses and Benefits

The Castelli Fly Sey Jacket is an essential companion for a wide range of activities and weather conditions. Whether you're cycling through unpredictable spring weather or engaging in outdoor pursuits, this jacket ensures you stay comfortable and protected. Its interval temperature range of 9°C to 17°C makes it ideal for a variety of scenarios. With its lightweight design and advanced materials, the Fly Sey is perfect for cyclists, hikers, and anyone seeking a reliable layer for those uncertain days. Embrace the versatility of the Fly Sey Jacket and experience the comfort and protection of Castelli's innovative technology.

What Our Customers Say

February 3, 2026

Absolutely no complaints!

This is a very well-calibrated instrument.

- Calibrated.

February 3, 2026

Absolutely no complaints!

I'm very happy with the tactile feedback.

- Rachel Garcia.

February 3, 2026

Absolutely no complaints!

A phenomenal piece of equipment.

- Riley T..

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