The Rab Infinity Endurance Jacket is a very lightweight, very practical & very compressible down jacket with extra protection from light rain, snow & spindrift. Rab have used Pertex Quantum GL, a 10 denier Nylon, 30 gram per square metre fabric for the outer & then added an Endurance coating to vastly improve water resistance. To protect vulnerable wear areas Rab has used heavier duty Pertex Endurance, a 30 denier Nylon, 55 gram per square metre fabric, on the hood, outer arms & cuffs. So you get a lightweight, highly water resistant & tough jacket that is perfect for UK winter mountaineering & hill walking. The Infinity Endurance is filled with 210g of 850 fill power Hydrophobic European Goose Down, which is about as good as it gets, in a stitch through midi baffle construction. To further increase the practicality of this brilliant jacket Rab is using Hydrophobic down, basically each & every cluster of down is treated with Nikwax special products to make them perform better in damp conditions. Although Hydrophobic down is not waterproof it dries much faster, absorbs less water & retains loft far better than untreated down. Featuring a down filled helmet compatible hood with wired peak & adjustment, plenty of pockets for all your essentials & to stuff your cold hands into, elasticated cuffs & a hem drawcord. 210g 850 fill power Hydrophobic European goose down Stitch-through baffle construction Down-filled helmet-compatible hood with wired peak Tethered drawcord helmet adjustment YKK front zip with mini internal insulated zip baffle & chin guard 2 YKK zipped handwarmer pockets 1 YKK zipped chest pocket 1 YKK zipped internal security pocket Elasticated cuffs Hem drawcord Stuff sack Regular fit