bundle up
phrasal verb
bundle something ↔ up | bundle something ↔ together
​to make or tie something into a bundle
He bundled up the dirty clothes and stuffed them into the bag.
The papers were all bundled together, ready to be thrown out.
bundle somebody up (in something)
​to put warm clothes or thick material on somebody
I bundled her up in a blanket and gave her a hot drink.
e.g.
Do bundle up. It's awfully cold outside. 今夜は冷えてます　厚着を (/yupeco/『ホーム・アローン2』)