Men's Sio4 Long Sleeve Half Zip Color:Black/Silver Construction: Engineered BioFlex performance knit

Construction: Engineered BioFlex performance knit • 4-way stretch • YKK® Ankle zippers

Construction: 4-way stretch reinforced stitching

What you feel: Accelerated recovery between training sessions and improved blood flow to active muscles

Integrated Thumbholes — Stabilizes sleeve positioning during dynamic movements → Eliminates distractions and prevents ride-up during heavy pulls or runs

eliminating distractions during high-velocity movement

Men's Sio4 Long Sleeve Half Zip Color:Black/Silver Construction: Engineered BioFlex performance knitMEN'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