DS is 15 next month and I want to buy him a new jacket. He currently wears a half-zip K-way waterproof, size small but probably needs a medium for length as it's in danger of looking like a crop top. I could buy same again and size up but I'd also rather get him something bit warmer. Does anyone have any other recommendations. Budget £150max, navy or black, nothing too puffy. I'm not seeing anything of his mates to clock what's "in" if you see what I mean.