Men's Sio4 Long Sleeve Half Zip Size:XL Flight-Optimized Dimensions — Engineered for

Flight-Optimized Dimensions — Engineered for standard overhead bin compliance → Accelerates travel for the high-performance athlete

Engineered for the demands of the platform and the box

EcoCloud™: Fuses high-performance athletic fibers with recycled materials to engineer a sustainable performance textile

High-Gauge Technical Knit — Accelerates moisture wicking → Maintains optimal body temperature during peak physical exertion

Men's Sio4 Long Sleeve Half Zip Size:XL Flight-Optimized Dimensions — Engineered forMEN'S LONG SLEEVE MAGMATIC THERMAL TECHNOLOGY ACCELERATES SKIN TEMPERATURE TO DOMINATE COLD WEATHER PERFORMANCE. KEY FEATURES Magmatic Thermal Fabric Engineered with volcanic ash minerals to accelerate surface skin temperature Sustains peak performance and warmth during intense cold weather training. Locksafe Zip Features a secure quarter zip design that eliminates zipper movement Delivers uninterrupted focus and customizable ventilation during