Offset construction products have a unique structure that imparts greater wind resistance, greater warmth and fewer cold spots than traditionally-constructed down products. Offset construction is more wind resistant, has fewer cold spots and provides more even warmth than traditional constructions methods. It is also softer and more comfortable to wear than a full box-wall jacket.

Offset construction is unique, but deceptively simple. Rather than two pieces of fabric being joined together, with down kept between them, a third layer is positioned between them. The inner and outer fabrics are then sewn to this inner layer, each line of stitching offset by painstakingly flipping the fabric one way and then the other. The crucial middle layer is not only lightweight, but also aluminium coated to further improve heat retention.