Men's Long-Sleeved Shirts

Your All-Season Performance Layer

Long-sleeved shirts are the essential workhorse of the serious athlete's wardrobe. At Decathlon, our collection is engineered to serve as a protective top layer in summer or a high-performance thermal base layer in winter. Whether you're gaining elevation in the mountains or training for a marathon, our shirts provide the optimal balance of warmth, ventilation, and sun protection.

Discover shirts built with advanced natural and synthetic fibers from our expert brands, Simond, and Kiprun.

Technical Fabrics & Engineered Warmth

Our long-sleeved shirts are categorized by their intended use and primary fabric technology:

1. Merino Wool (Forclaz & Simond: The Ultimate Base Layer)

Ideal for backpacking, trekking, and mountaineering, our Merino wool shirts are designed to handle variable conditions and multi-day use:

• Thermoregulation: Merino wool naturally keeps you warm in the cold and helps cool you down in the heat, preventing the unpleasant "freezing effect" after intense sweating.
  
  
• Built-in Odor Control: The natural properties of wool limit perspiration odors, meaning you can wear the shirt for days on the trail, reducing pack weight.
  
  
• Durability Hybrids: Look for our Merino Resist blends, where the wool fiber is wrapped in polyamide thread. This construction significantly increases abrasion resistance and longevity against backpack straps and rigorous use.
  
  
• Advanced Ventilation: Features often include a half-zip collar (like the MT500 series) for quick ventilation when your body heat spikes during hikes.

2. Performance Synthetics (Kiprun & Quechua: Focus on Speed)

Designed for high-output activities like running, cycling, and fitness, these shirts prioritize speed, breathability, and quick drying:

• Rapid Moisture Wicking: Synthetic polyester fabric quickly pulls sweat from the skin and diffuses it, guaranteeing quick-dry performance and preventing the shirt from becoming heavy or clammy.
  
  
• Thermal Comfort: Features like a half-zip and thumb loops on our running shirts offer dynamic temperature control: keep the zipper up and use the thumb loops for warmth, or unzip for rapid cooling.

The Long Sleeve Advantage

A long-sleeved shirt is your most versatile layer:

• Sun Protection: Provides all-day protection from harmful UV rays and shields skin from brush on the trail.
  
  
• Base Layer Function: Worn next to skin, it manages moisture and provides a foundational layer of warmth under a fleece or jacket.
  
  
• Reduced Chafing: The long sleeve provides a friction barrier under outerwear and on long movements, helping to prevent armpit and backpack chafing.

Gear up for cooler conditions and extended adventures. Explore the full Decathlon Men's Long-Sleeved Shirt collection and find your perfect fit today.