La Sportiva Men's Swift Long Sleeve Shirt

High-Output Thermal Performance for Cold-Weather Trail Runs

Best For: High-aerobic winter trail running, cold-weather fastpacking, and layerable protection across freezing Maritime training days.

Lock in winter warmth without overheating when charging up frosty Halifax singletrack. The La Sportiva Swift Long Sleeve utilizes a high-neck collar and stretchy recycled synthetic fabric to dump moisture rapidly during high-output efforts. It serves as a standalone top on crisp autumn mornings or a high-performance midlayer when Atlantic cold fronts roll in.

Dump excess heat fast on steep trail climbs using the two-way half-zip opening for instant airflow control. Integrated cuff-gloves flip over your hands to keep numb fingers warm on frosty ridge runs, eliminating the need to fumble with extra gloves.

Stay fresh for days on multi-day backcountry missions thanks to embedded Polygiene® anti-odor technology. The quick-drying, eco-friendly build handles heavy sweat sessions effortlessly before grabbing a post-run pour-over at the 3 Mile cafe.

Technical Cold-Weather Features

• Two-Way Half-Zip: Provides rapid, customizable ventilation on high-intensity trail climbs.
• Integrated Cuff-Gloves: Converts easily to cover your hands and block out freezing ridge winds.
• Polygiene® Anti-Odor: Silver-salt treatment actively prevents odor-causing bacteria for multi-day freshness.
• Protective High Collar: Seals out cold drafts around your neck during chilly shoulder-season runs.
• Recycled Technical Stretch: Quick-drying fabric moves naturally with your body while lowering environmental impact.