Designed for speed, heat, and high-output movement, the Senja Flex1 4" Shorts are built to disappear on the run while delivering everything you need when it counts. Exceptionally lightweight and highly breathable, they’re tuned for trail running but versatile enough for any fast-moving day outdoors—where comfort, mobility, and efficiency are non-negotiable.

At the core is Norrøna’s flex1 softshell fabric, a technical stretch weave that balances durability with unrestricted movement. Made from a recycled nylon blend, it offers wind resistance, rapid moisture transport, and quick-drying performance—keeping you comfortable as conditions shift and effort levels rise. The fabric’s light structure (just 106 g/m²) ensures airflow and breathability without compromising strength on rugged terrain.

Purpose-built features keep essentials close without slowing you down. Integrated gel pockets along the thighs provide easy-access fuel storage, while a zippered back pocket secures valuables. An internal key hook and pocket system add organization, and a gusseted crotch enhances mobility over uneven ground. Finished with an elastic waistband, adjustable cord, and stay-in-place hems, these shorts are dialed for long runs, steep climbs, and everything in between.

Features:

• Flex1 Softshell Fabric: Lightweight, breathable stretch material with wind resistance and durability
• Recycled Construction: Made with 86% recycled nylon and 14% elastane
• Quick-Drying Performance: Efficient moisture transport for high-output activity
• Elastic Waist with Drawcord: Secure, adjustable fit for dynamic movement
• Integrated Gel Pockets: Two thigh pockets for easy-access nutrition storage
• Zippered Back Pocket: Secure storage for small essentials
• Internal Key Hook & Pocket: Keeps keys safe and organized
• Gusseted Crotch: Enhances range of motion on technical terrain
• Elastic Stay-in-Place Hem: Prevents shifting during movement
• Side Slits: Improves mobility and airflow
• Reflective Logo: Adds visibility in low-light conditions
• DWR Treatment (PFC-Free): Water-repellent finish without fluorocarbons
• Exterior Hang Loop: Easy drying and storage

Specifications:

• Category: Women’s trail running shorts
• Weight: 100 g (size M)
• Inseam: 4"
• 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
• Certifications: Oeko-Tex® certified fabric
• Finish: PFC-free DWR (Durable Water Repellent)
• Best Use: Trail running, fast hiking, high-output outdoor activity