For mountaineers and ambitious trekkers who depend on maximum heat insulation and minimal weight on extreme tours.
Deuter sleeping bags for professionals are also bluesign products with RDS-certified down.
The inner sleeve wraps gently around the sleeper thanks to elasticated chamber stitching to effectively prevent the formation of cold spots.
Inside the outer sleeve the inner sleeve can expand by up to 25% in width to create more space inside the ASTRO PRO models.
The Astro Pro 400 is ideal for temperatures between -4 to -20°C