This advanced half-zip vest features a wind-protective front and upper back with light insulation in a bonded 3-layer design

Curved shield shades with a ventilated wrap lens and feature-packed frames built for non-stop performance

Shrinks as you drink to eliminate sloshing and easily stores in pocket when empty

a dynamic design that promotes a smooth and efficient transition from heel to toe

Enjoy run-ready performance plus casual style in this sweat-wicking

Shokz OPENFIT 2+ m apparel This advanced half-zip vest featuresShokz OPENFIT 2+ Dynamic Audio with Powerful Bass. Shokz DualBoost Technology ensures dynamic audio with crystal clear mids and highs. The advanced OpenBass 2. 0 algorithm delivers bold bass directly to your ear. Non stop battery life. Up to 48 hours of total listening time. Up to 11 hours of battery life with a single charge. A quick 10 minute charge delivers 2 hours of playtime. With Qi wireless charging you just place it down and power up.