Men's waistcoats
The third piece. It adds warmth where it is needed, on the torso, and leaves the arms free.
Shapes
Single breasted with five buttons: the three piece suit shape, worn with a jacket in the same cloth.
Knitted: worn under a jacket in place of a jumper, with no bulk on the sleeve.
A waistcoat is always buttoned leaving the last button open.
Cloth
Wool and herringbone for the three piece. Denim and cotton for the informal register.
Cashmere and wool knits for the versions worn under a jacket.
Frequently asked questions
Should the last button be left open?
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Yes. It is a century-old convention, and it also leaves room to move when you sit.
Can it be worn without a jacket?
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In the informal register yes, over a shirt. With a three piece no: the waistcoat belongs to the suit.
Which size should I choose?
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S/46, M/48, L/50, XL/52. A waistcoat should be close: if it gapes at the front when you sit, it is too tight.
Can it be made to measure?
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Yes, including to match a suit. It starts with choosing the cloth.