This hat has a secret function...

Summary by Krater

The creator designs, sews, and tests a prototype baseball cap that transforms into a reusable grocery bag, testing it at a supermarket.

From the video

Answers: How do you make a baseball cap that turns into a grocery bag?

• sewing a transformable garment
• baseball cap conversion
• DIY reusable grocery bag

What it concludes

• A baseball cap can be successfully converted into a functional reusable grocery bag.
• The cap-bag prototype successfully held ten apples during a grocery store test.