Mammut - Rime Light Insulated Flex Vest - Synthetic vest. Inserts: 89% polyester, 11% elastane|Material type: Synthetic insulation|Material thickness: 20 denier|Fill weight: 40 g/m² OTI Stretch|Sustainability: PFC-free|Sustainability: fabric certified as bluesign APPROVED|Closure: full length 2-way front zip|Pockets: 2 zipped front pockets|Reference size: medium size|Fit: regular|Extras: elastic hem|Extras: stand up collar|Extras: stowable in its own pocket|Sustainability: PFC-free|Sustainability: bluesign APPROVED