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For those days when you aren't sure if you need a jacket or just a jersey with warmers. The Fly Jack-sey hits that sweet spot when it's in between temperatures while offering protection just in case. Featuring brand-new lightweight construction with Castelli FLY Fabric Technologies: FFT. Treated with a water-repellent finish to help keep you dry. All this in a super-lightweight Jack-sey.

The Fly Vest, giving you just enough warmth to take the chill off, is an amazingly lightweight garment. Featuring brand-new lightweight construction with Castelli FLY Fabric Technologies: FFT. The sides and back offer enough stretch to get the perfect fit for this unbelievably lightweight vest.

A jacket so light it feels like it could just fly away. Super-lightweight construction using Castelli FLY Fabric Technologies: FFT to keep you warm and protected from the elements.

This mid-weight jacket is perfect for the changing weather as we enter fall and spring. Enough warmth and protection without overdoing it. A neutral fit and extra reflectivity for added safety.

The Fly LS Jersey is a lightweight thermal long-sleeve jersey for those days when it's just a bit chilly and you're looking to go fast. The soft brushed-back Fly T-SL fabric offers the right amount of warmth while being stretchy and lightweight. We've tailored the Fly LS Jersey for a close-to-body fit.

The thermal jersey for the cyclist who prefers a jersey and vest in cool conditions instead of a light jacket. The brushed fleece fabric keeps you warm but also has enough stretch to ensure a perfect and comfortable fit.

Fully waterproof jacket for when you need complete protection, whether from rain or just from cold. Styled so you can wear it off the bike too.

GORE-TEX INFINIUM™ WINDSTOPPER® jacket ready for any adventure on the bike. This jacket will protect you from the rain while still being breathable. It's got a classic jacket cut with two zippered front pockets and a hood, giving it a casual look and making it the perfect jacket to go from the bike to the office to the café.

Made to keep your core warm while providing enough ventilation to keep you from overheating. Brushed fleece inside provides warmth. Stretch side panels keep it fitting perfectly.

Seamless for comfort and surprisingly warm for its weight, this base layer is ideal in cool conditions, providing excellent moisture management.

The go-to jacket for rain protection, whether for all-day use or emergency use, since it easily stashes away in a jersey pocket. With discreet styling and 360° reflectivity, it can do double duty as a commute jacket.

The Go Jacket is Castelli's most versatile jacket. It can be used as a light shell in mild conditions or go to cold conditions by adding insulating layers underneath. Stretchy, comfortable, breathable, windproof, water resistant, elegant, and lightweight, this jacket has it all. Get out and Go.

The jacket that's very warm yet extremely packable for your adventure or multiday rides. Woven microfiber windproof outer layer with Polartec® Alpha® Direct insulation.