Yupster - Night Flow

Yupster - Night FlowNightflash Collection Black by day. Flash by night. A high performance trail running collection built for runners who move through mountains, forests, and into the dark. Ultra light, quick dry, and highly breathableengineered to pair seamlessly with a hydration vest. By day, it stays understated. By night, reflective details ignite, keeping you visible when the trail disappears. Quiet in daylight. Bright when it counts. TECHNICAL DESIGN HIGHLIGHTS

Nightflash Collection
Black by day. Flash by night.

A high-performance trail running collection built for runners who move through mountains, forests, and into the dark.
Ultra-light, quick-dry, and highly breathable—engineered to pair seamlessly with a hydration vest.

By day, it stays understated.
By night, reflective details ignite, keeping you visible when the trail disappears.

Quiet in daylight. Bright when it counts.

TECHNICAL DESIGN HIGHLIGHTS

Small-Seam Construction
• Reduced seams to minimize chafing
• Smooth edges for all-day, long-distance comfort
• Less friction during climbs and arm swing

Hydration-Vest Optimized Stitching
• Strategically repositioned shoulder and chest seams
• Eliminates pressure points beneath vest straps
• Reduces hotspots and irritation on long runs

Ultra-Lightweight Fabric
• Barely-there feel on technical terrain
• Ideal for heat, steep ascents, and long hours on foot

Quick-Dry Performance
• Advanced moisture-wicking
• Rapid evaporation to keep you dry
• Designed for high-output efforts

Enhanced Breathability
• Engineered airflow for hot and humid conditions
• Helps regulate body temperature on demanding climbs

Reflective Back Design
• Clean and subtle in daylight
• High-visibility after dark
• Safety without sacrificing a minimalist aesthetic