This is the high collared, 1/2 zip version of the classic original Helly Hansen base layer.

Ideal for aerobic activities in chilly conditions, the Dry Charger 1/2 Zip will provide all-day comfort to help you crush your workout. The high collar provides additional protection against the cold, and the 1/2 zip design allows for ventilation and thermal control when you pick up the pace. 

The Dry Charger 1/2 Zip is constructed from 100% Lifa Stay Dry fabric, which is very lightweight, extremely breathable, quick-drying and moisture wicking. Lifa Stay Dry has been continually improved upon for the last 40 years. It is the secret ingredient in all Helly Hansen base layers that sets them apart.