: A classic overcoat should fall at or slightly below the knee. Shorter styles (topcoats) usually end mid-thigh. sizing an overcoat/topcoat - Ask Andy About Clothes
: Reach your arms forward as if hugging someone; if you feel extreme restriction in the back or shoulders, you need a larger size. what size overcoat should i buy
: If you wear a size 42 suit, a size 42 overcoat is intended to fit over it comfortably. : A classic overcoat should fall at or
: You should be able to button the coat comfortably without any pulling or tension across the chest. : If you wear a size 42 suit,
: The sleeves should completely cover your suit jacket and shirt cuffs, reaching about a half-inch past the wrist bone or grazing the top of your hand.
To ensure you have the right size, check these specific areas while wearing your heaviest expected layer (like a blazer):