Size/Fit Summary: True to size,Regular fit. Centre back measurement for Size M is 70cm/27.5".The Original Shell jacket in a classic black is packable,water-resistant and lightweight. Zip-up,stand out and be protected from the wind and rain with this windbreaker style jacket that's crafted from 100% recycled polyester with a carbon-free coating. Underarm eyelets offer breathability while the adjustable hem and hood provide extra protection from the elements. When the sun comes out,simply pack it away into the small bag tucked away in the neck seam.Water-resistant using a carbon-free coatingStows away into attached bag at the neck seamHood with draw cord adjuster for extra wind and rain protectionAdjustable hem with drawcordUnderarm eyelets for ventilationElasticated cuffHunter signature zips