The DELTA from Arc'Teryx is a very versatile fleece jacket for men . It is indeed one of the most versatile models as it can be easily worn under a jacket or on its own.

The advantage of this model is that it provides effective warmth with a reduced weight. Made of Polartec Power Dry fleece with a grid construction, it is quick to dry, yet very compact. Worn alone, this jacket provides lightweight insulation for high-intensity, cool-weather activities, while under a jacket, it works well as a lightweight mid-layer.

A few details amplify its effectiveness, such as the presence of a zippered chest pocket and thumb loops.