A puffer coat and grey wool chinos are great menswear essentials to have in the casual part of your wardrobe. For a more polished feel, why not complement this look with dark purple loafers?
Dark Purple Loafers with Puffer Coat Cold Weather Outfits For Men
Consider teaming a puffer coat with mustard plaid chinos for a comfy look that's also put together. Dark purple loafers will give a touch of sophistication to an otherwise mostly dressed-down look.