EXTREME : -5°F/ -21°C LIMIT OF COMFORT : 25°F/ -4°C COMFORT : 33°F/ 1°C WITH OVER 30 YEARS OF EXPERIENCE PRODUCING AND SUPPLYING DOWN PRODUCTS, OUR EXPERIENCE SAYS -5°C (23°F) IN LIMIT OF COMFORT. OUTSIDE FABRIC : 100% POLYAMIDE NYLON 6-6 RIPSTOP 38.7G/M2 DWR TREATMENT ASAHI-KASEI INSIDE FABRIC : 100% POLYESTER 40.8G/M2 DWR TREATMENT ASAHI-KASEI COMPARTMENTS : 38 COMPARTMENTS, MOUNTED USING STRAIGHT H BOX WALLS. DOWN QUALITY : DUCK 90/10 FILLED WITH OUR 90/10 "FATTY" GRAY DUCK FROM THE SOUTH WEST OF FRANCE. A UNIQUE AND TOTALLY MATURE DOWN QUALITY, THAT HAVE A FILLING POWER OF 650+ CUIN (EU NORMS) 700+ (US NORMS). A STRONG LONG LASTING QUALITY DOWN WITH EXCELLENT MOISTURE RESISTANCE.