Why Jeans Have Secondary Tiny Belt Loops

It's not a design flaw, or a backup in case the main loop breaks. It actually serves a purpose. Here are some theories and the real reason for the loops.

Belt Width Guide – Elliot Rhodes Ltd

THE BELT LOOP ON DENIM JEANS – Tailored Jeans's BLOG

Belt Loops Vs. Side Adjusters: Which do You Choose?

Installing Jean Belt loops, Hemming Jeans & Sewing Buttonhole

How & Whys of Adding Belt Loops to Jeans

How to fix torn belt loops on jeans - a quick & easy mending tutorial + tips too!

Sewing Glossary: How To Make And Attach Belt Loops – the thread

What is a belt loop? – Tailored Jeans's BLOG

BeltBro No-Buckle Elastic Belt for Men - Fits 1.5-Inch Belt Loops, Comfortable, Guaranteed to Fit All Pants at Men's Clothing store

Loop De Doo: Denim Belt Loops Turn 100

How to Fix a Ripped Belt Loop on a Pair of Jeans - iFixit Repair Guide