One spring morning, with the sky still tinged with stars, you decide to go for a run on the rugged trails. This is where the Smartwool Men's Active Ultralite Long Sleeve comes into play. Designed to move fluidly with every motion, this Merino Wool Jersey, made with ZQ-certified merino wool and TENCEL™ Lyocell fibers, offers you an unparalleled feeling of freshness, even when the effort intensifies. The offset shoulder and side seams minimize chafing, ensuring optimal comfort during your adventure.
Whether you're seeking performance or simply a moment of relaxation in nature, this jersey keeps your safety in mind with its reflective elements, perfect for your late-day outings. And for those concerned about their impact, rest assured that this garment is designed to minimize its footprint. So, ready to explore new horizons with the Smartwool Active Ultralite Long Sleeve? One thing is certain, it will be a loyal ally, whether you're a novice or an expert in outdoor terrains.
Our athletic fit
Offset shoulder and side seams enhance comfort and minimize chafing
Reflective elements

Nature is our playground and our commitment to the environment is obvious. This is also why we highlight our selection from HardGreen, which makes sustainable, eco-friendly products that help
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