Maybe you stuff a sweater under a down vest under a parka?

WSJ: Jason Gay: Your Outdoor Sports Survival Guide

Atiq Shaukat extracts a ring of keys from under his long vest and rushes into the jail, followed by two militiawomen hidden inside their burqas.

NPR: 'The Swallows of Kabul' Book Excerpt

In the pocket of the greasy vest that he wore under his kurta she found a wrapped-up newspaper holding chunks of raw brown sugar.

NEWYORKER: Nawabdin Electrician

When he came into FORBES, he wore jeans with rolled cuffs, a sweater vest over a shirt and tie, all under a leather bomber jacket.

FORBES: Who Was 'That Guy' at the Jerry Buss Memorial? Family Friend Greg Tomlinson Tells His Story