The original Halo jacket was launched in 2008 as a super-lightweight down jacket when the category didn’t exist. Crux recognised a need for an insulating layer that was light enough to stop you overheating when cranking out the watts, but was warm enough to prevent overcooling when stopping for a breather. For winter 2015/16, Crux have updated the Halo jacket by switching to a water-resistant Pertex Endurance shell. The hood is now integral. They have also refined the overall fit, making the halo slightly longer and slightly more snug. The down quality remains a market-leading 900 fill-power sourced entirely from Poland. Two zipped hand-warmer pockets Internal pocket (doubles as stuff-sack, with belt loop) Fixed hood Elastic at hem with double adjusters Lycra cuffs Specifications Weight - 295g Fill - 135g 900 fill-power (EU rating) Polish white goose down Shell - Pertex Endurance, 29g/m², 41 denier nylon ripstop Lining - 30g/m², 15 denier nylon ripstop