La Sportiva Women's Swift Long Sleeve Shirt

High-Output Thermal Performance for Cold-Weather Trail Runs

Best For: Cold-weather trail running, winter fastpacking, and layerable thermal warmth across freezing Maritime training routes.

Lock in winter warmth without overheating when charging up frosty Halifax singletrack. The La Sportiva Women's Swift Long Sleeve utilizes a protective high collar and stretchy recycled synthetic fabric to dump moisture rapidly during high-intensity efforts. It functions seamlessly as a standalone top on crisp autumn mornings or an active midlayer when Atlantic cold fronts roll through.

Dump excess heat fast on steep trail climbs using the two-way half-zip opening for instant ventilation control. Integrated convertible cuff-gloves quickly flip over your hands to keep numb fingers warm on frosty ridge runs, eliminating the need to pack extra gloves. The women's athletic fit moves naturally with your stride without bunching under a hydration vest.

Stay fresh for days on multi-day backcountry fastpacking trips thanks to embedded Polygiene® anti-odor technology. The quick-drying, eco-friendly fabric handles heavy sweat sessions effortlessly before grabbing a post-run pour-over at the 3 Mile cafe. It is an essential cold-weather piece built to keep you moving outside when the mercury dips.

Technical Cold-Weather Features

• Two-Way Half-Zip: Delivers customizable airflow control on high-aerobic trail climbs.
• Integrated Cuff-Gloves: Flips over hands to block out freezing winds and protect cold fingers.
• Polygiene® Anti-Odor: Natural silver-salt treatment actively inhibits odor-causing bacteria for multi-day fresh wear.
• Protective High Collar: Seals out cold drafts around your neck during chilly shoulder-season runs.
• Recycled Technical Stretch: Quick-drying fabric moves fluidly with your body while lowering environmental impact.