Fjallraven Lenni Shirt

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Lightweight and breathable, the updated Lenni Shirt delivers everyday comfort and performance with a low-impact design.

Mammut says: 

The classic hiking shirt designed for ultimate versatility, the Lenni is an easy choice on short day hikes and long trekking trips alike. The latest iteration of this best-selling shirt delivers all the features you know and love with a new, low-impact material. The high-performance, lightweight fabric is 91% recycled polyester, fast drying and easy to care for. HeiQ Fresh technology reduces odors to ensure the Lenni never lets you down, even on the most grueling tours. Stash your map or passport in the front pocket and take to the trail in this timeless piece of hiking kit.

All Mammut products purchased within the Europe come with an extended 30-month warranty period. For more details click here.

Our Verdict

At 122g (medium), the Lenni is a classic short-sleeved trekking shirt that blends recycled polyester with subtle but useful features. The fabric dries quickly and holds its shape well after washing, making it a strong option for back-to-back trail days. The HeiQ Fresh treatment has helped keep things fresher for longer, and the shirt remains comfortable even after hours under a pack. The pleat across the upper back allows for better range of movement, especially when scrambling or using poles.

There’s a single chest pocket with a button for small essentials, and UPF 50+ protection adds a bit of reassurance when hiking in exposed terrain. The fit is regular, and the cut works equally well on the trail or off it, which is ideal if packing space is limited.

– Reviewed by Ultralight Outdoor Gear

Features

• Lightweight and quick-drying
• Treated with HeiQ Fresh FFL – a bio-based technology that reduces unpleasant odors
• Reliable protection from strong sunlight
• Chest pocket with button
• Movement fold on back for extra comfort

Specifications

• Small weighs: 118g
• Medium weighs: 122g
• Large weighs: 129g
• XLarge weighs: 140g
• XXLarge weighs: 163g
• Regular Fit

Material & Construction

• Face Material (B2B): 100% Polyester (recycled)
• HeiQ Fresh

Help & advice:

• Recycled Content in Outdoor Gear