Built for speed and sustained effort, the Senja Flex1 5" Shorts are designed to keep distractions to a minimum while performance stays high. Exceptionally light and highly breathable, they’re tuned for trail running but versatile enough for any fast-paced day outdoors—where airflow, mobility, and efficiency make all the difference.

The core of the design is Norrøna’s flex1 softshell fabric, a lightweight stretch weave that balances durability with ventilation. Made from a recycled nylon blend, it offers wind resistance, rapid moisture transport, and quick-drying performance—helping regulate temperature when intensity climbs. At just 106 g/m², the fabric feels barely there, yet remains resilient enough for rugged terrain and repeated use.

Purpose-driven features round out the build. Integrated gel pockets along the thighs keep fuel within reach, while a zippered back pocket secures valuables. An internal key hook adds peace of mind, and the gusseted crotch ensures unrestricted movement across uneven ground. Finished with an elastic waistband, adjustable cord, and stay-put hems, these shorts are dialed for long miles, warm conditions, and constant motion.

Features:

• Flex1 Softshell Fabric: Lightweight, breathable, and wind-resistant with stretch performance
• Recycled Construction: 86% recycled nylon / 14% elastane
• Quick-Drying & Moisture Managing: Keeps you comfortable during high-output efforts
• Elastic Waist with Drawcord: Secure, adjustable fit
• Integrated Gel Pockets: Two thigh pockets for easy-access nutrition
• Zippered Back Pocket: Safe storage for small essentials
• Internal Key Hook: Keeps keys secure during movement
• Gusseted Crotch: Enhances mobility on technical terrain
• Elastic Stay-in-Place Hem: Prevents shifting while running
• Side Slits: Improve stride freedom and ventilation
• Reflective Logo: Increased visibility in low light
• Exterior Hang Loop: Easy drying and storage
• PFC-Free DWR Treatment: Water-repellent finish without fluorocarbons
• Oeko-Tex® Certified Fabric: Meets strict environmental and safety standards

Specifications:

• Category: Men’s trail running shorts
• Weight: 116 g (size L)
• Inseam: 5"
• Fabric: 86% recycled nylon / 14% elastane (flex1, 106 g/m²)
• Fit: Regular
• Waist: Elastic with adjustable cord
• Pockets: Two gel pockets, zippered back pocket, internal key pocket
• Finish: PFC-free DWR (Durable Water Repellent)
• Certifications: Oeko-Tex®
• Best Use: Trail running, fast hiking, high-output outdoor activity