Finally bought one of these jumpers in the natural colour. Ordered my usual size UK8 and the fit is perfect. The style is roomy / boxy so any bigger and it would be too large. The forearms are quite snug on me but not on the upper arms. I wear it with a thin base layer underneath. The neck can be worn high like a polo (very snuggly) or rolled down. Some wool I cannot wear as it’s too itchy. To be honest when I first tried this jumper on I could feel a bit of an itch, and thought I would have to return it, but surprisingly it disappeared! Even with the neck fully up it doesn’t irritate. I love the coloured flecks against the oatmeal colour, it will go with anything. I’ve been wearing it with leggings and boots. The warmth this generates is unreal compared to synthetic-wool mixes. Wool really is best. I’ve not washed it yet but will probably hand wash it.