Lightweight, duck down insulated and comfortable, the Rab Ascent 500 boasts a toasty 650 fill power, wrapped in robust Pertex fabric. The wider shape, spacious foot box, and soft fabric offer a luxurious feel, whilst the sturdy 5 coil YKK zip with anti-snag bonding ensures smooth and easy usage. This is a high-performance bag with enough space and insulation to keep you comfortable across two seasons.Two season down insulated sleeping bag from RabHydrophobic Down - 650 fill power filling performs in all conditions, even when wetRDS certified down (Responsible Down Standard)Pertex Fabric - lightweight breathable material features on the interior and exteriorWide mummy shape - provides added space and comfortZip together compliant - zips in to opposite sleeping bag to form a doubleYKK 5 coil main zip - sturdy and robust mechanismAnti-snag taping - ensures zip runs smoothlyInternal YKK zipped stash pocketSpacious angled foot boxCotton stuff sackComfort temperature: -0°CRab Sleep Limit: - 6°CWeight: 1060g