The Osa Light Pertex is an insulated shirt jacket utilising Pertex® Quantum technology; a technical fabric that uses a tightly woven structure to provide a light and soft windproof fabric that allows insulation to fully loft. This construction is designed to trap still air and improve the efficiency of insulation. This textile is 50% recycled and finished with a PFC free DWR finish that sheds light rain and snow to provide additional protection. Features include a raglan sleeve cut for movement, a front chest pocket with water repellent PU coated zip, and zip front. This jacket has a hidden back attachment strap making it compatible to wear with Norse shell pieces.

Insulated with Thermore® Ecodown®, a high performance lightweight insulation containing 100% recycled fibres from PET bottles. Every jacket insulated with Ecodown® allows recycling of up to 10 PET bottles.