This beautiful lightweight jacket uses a 90/10 ratio, 90% percent made of down and 10% made of feathers. This is a perfect jacket for warmer days or as a second layer in temperatures that need more warmth. The wind- and water-repellent membrane ensures that you can enjoy the mountains dry and comfortable. This jacket has been a bestseller for years and for good reason, it is extremely comfortable and functional. It is important to us and many other people that responsibly sourced materials are used. Peak Performance also only uses responsibly sourced down. This down is also fully traceable via the TRACK MY DOWN® system. The Helium Down jacket is really perfect in all conditions. You can use it as a ski jacket during the warmer days, but it can also be worn as an midlayer under a shell jacket in colder temperatures. This jacket can also be worn as a daily winter ashtray because of the warm down from which the jacket is made. Because this jacket has sufficient room to move and is extremely light, the jacket is also functional for many outdoor sports outside of skiing. This is the all-round jacket that has everything you are looking for!