For the jacket’s filling, we used a unique mixture of duck down and Primaloft® synthetic padding, which is distributed in such a way as to help you get the most out of its jacket. In places that are prone to moisture, we used a synthetic insulation that doesn’t lose its insulating properties when wet, while in other parts of the jacket, you’ll find a duck down padding that will help keep you nice and warm. The jacket is very easily packable and comes with a compact carry pouch that barely takes up space in your backpack.Please note: For this product, we used a padding made of real and first-class natural down feathers that have not been chemically bleached. Therefore, about 0.5% of the total down padding is made up of “black-spots,” i.e. dark brown feathers with a higher pigmentation. Due to the use of ultra-light material, these feathers can shine through lighter-coloured jacket material. This is a natural phenomenon and not a defect in the padding, and it will have no effect on the overall functionality of the jacket.