The Femund PureUll Long Sleeve is Norrona’s refined take on a do-it-all merino base layer—built for year-round outdoor performance and clean enough for everyday wear.

Crafted from 100% premium merino wool, this mid-weight long sleeve harnesses the natural intelligence of wool: it regulates temperature, manages moisture, and resists odor, keeping you comfortable across changing conditions. Whether worn next to skin on cold days or as a standalone layer in milder weather, it delivers dependable warmth without overheating.

The ultra-fine 18.5-micron merino feels exceptionally soft against the skin while maintaining impressive durability. Thanks to its single jersey knit and S+Z twisted yarn construction, the fabric resists pilling, abrasion, and shape loss—making it a long-term staple for active use.

Designed with a regular fit and articulated arms, the Femund PureUll moves naturally with the body, offering unrestricted mobility for hiking, skiing, travel, or daily wear. Thoughtful details like the asymmetric longer back and curved hem enhance coverage and comfort, while the minimal aesthetic keeps the look timeless and versatile.

Fully RWS-certified and produced in Europe, this base layer reflects Norrona’s commitment to responsible sourcing, traceability, and long-lasting quality.

Features

• Fabric: pureUll – 100% premium merino wool

• Fiber fineness: 18.5-micron ultra-fine merino

• Fabric weight: Medium-weight (approx. 165 g/m²) single jersey knit

• Fit: Regular fit with articulated arms

• Construction: S+Z twisted yarn for enhanced shape stability

• Certifications: RWS (Responsible Wool Standard), Oeko-Tex®

• Origin: Knitted and sewn in Europe

• Natural temperature regulation for all-season comfort

• Retains warmth even when damp

• Highly breathable and moisture-wicking

• Natural odor resistance for extended wear

• Soft, non-itch next-to-skin feel

• Durable construction resistant to pilling and abrasion

• Asymmetric longer back for added coverage

• Curved hem for a clean, modern silhouette

• Printed chest artwork for subtle branding

Specifications

• Weight: 224 g (size L)

• Style number: 2773-25

• Material: 100% merino wool (pureUll)

• Micron rating: 18.5

• Knit: Single jersey

• Best use: Base layer, everyday wear, hiking, skiing, travel

• Fit type: Regular

• Sustainability: RWS-certified wool, Oeko-Tex® approved fabric