The ultra-light materials and best down quality make the Sphere Down Spring one of the lightest and smallest-packing sleeping bags in the Mammut collection. The outer fabric is windproof and water repellent. Wave-shaped chambers prevent the down from shifting. The ergonomically designed foot area provides increased comfort and insulation. With the 140 cm long zipper, getting in and out is made easy.More Down Sleeping Bag from Mammut
The bluesign certificate guarantees sustainable production of clothing. Criterias are energy efficiency, low water and air pollution and pollutant levels.