Until now, the outerwear industry has been limited to mainly two options for insulating jackets: goose down (obtained by killing geese) and synthetics (made with oil). PAKA Mayu Ultralight jackets are instead made with natural PAKAFILL® insulation, ethically sourced from free-roaming alpaca in Peru. Having evolved in an extreme climate above 15,000 feet, this thermoregulating alpaca fiber is warmer than any synthetic insulation on the market, while its natural air pockets provide better moisture control than down insulation with half of the volume. A bluesign® certified and water-repellent shell without intentionally added PFAS complements our PAKAFILL® insulation to make the Mayu Collection the highest-performing sustainable jackets for traveling, hiking, biking, camping, and other outdoor adventures.