A Gentleman's Pajamas.

Let's be clear. What you wear to bed (or don't) is entirely your business. 

Do allow me to suggest that every gentleman should own at least one good pair of pajamas (pyjamas if you're French).

For sleeping, sure. For lounging, most definitely. For padding downstairs for an early morning glass of water and not startling your houseguests in the hallway. 

For paper-reading. Bloody-Mary-mixing. 

For not answering the door. 

For turning off notifications and rewatching Les Diaboliques.

Printed PJ Jacket (No. J7231). Modeled after mid-20th-century French pajamas, in 100% cotton with a modern geometric stripe. Classic PJ styling with a chest pocket and waist pockets. Flat hem. French placket. Camp collar. Made in India.