●100% Wool ●Imported ●Our lightest weight Merino jersey fabric uses a nylon core to increase durability while still keeping 100% Merino wool next to skin ●SW000748 ●Offset shoulder and side seams designed to increase comfort and minimize chafing while wearing a backpack ●Side seams wrap to front for body-enhancing fit. Flatlock seam construction designed to minimize chafing ●87% Merino Wool, 13% Nylon