Ritual and respect
Prajioud
ประเจียด
Also written pra jiad or prajiad
What it means
The armbands worn during a fight, historically tied by a family member or trainer. Unlike the mongkhon they stay on for the bout.
Some gyms use colours to mark experience level, which is a modern and gym-specific practice rather than a national grading system.
If a camp gives you one, it means something to them. Do not treat it as a souvenir in front of the people who gave it to you.
Related
Words that go with it
Mongkhon
The braided headband a fighter wears for the wai kru, given by the camp and removed by the trainer before the fight begins. It is treated as sacred.