Passive Aggressive Venting uses discreet exterior vents and internal channeling to manage airflow automatically

it protects your neck from the cold

helping create a secure fit without traditional buckles

The waist of 88 mm provides excellent stability and safety no matter where you're headed

fun-loving feel

Obermeyer Men's Oly 1/4 Zip Baselayer Size:S Passive Aggressive Venting uses discreetThis Oly Baselayer Zip Top is the perfect first layer for any outdoor activity. Made from polyester fabric with stretch, it wicks away moisture and has flat seam construction for maximum comfort. Plus, the integrated thumb loop makes layering a breeze. Stay comfortable and dry no matter what your adventure brings.