Some Norsemen were unbothered by leading in simple garbs and attire but it was required something from a higher officer in the army or royalty stick out to give notice to the lower class so that in times of peril or seeking guidance Arm cuffs were easy to spot and didn't require shouting for the captain during wartime just to give them a situation report. A simple bright line across a coiling cuff flanked with silver plates was enough to alert those that looked for it and keep archers uninformed.
Vikings knew everything about jewelry making. The most popular jewelry among the Vikings were bracelets, also known as armbands, or arm rings. Unlike today's bracelets, this kind of jewelry was mostly worn by men.