He’s reinvented the knife pocket in carpenter jeans. There’s also usually a loop nearby for hanging a hammer so you don’t have to walk around with your tool bags.
[0]: https://www.heddels.com/2019/04/fade-day-unbranded-ub421-14-...
That seems a bit of an odd thing to carry; how often do you use it?
I live in New York, where smoking is more common, and I've found an abundance of social situations that become available when a stranger needs a light.
https://www.leevalley.com/en-ca/shop/tools/apparel-and-safet...
I use the coin pocket extensively: for coins, medicine, chewing gum etc.
Lactase
Also AirPods