You take a careful look at the lotus kote...
A pair of samurai sleeves made of shiny golden metal.
It's in perfect condition.
It covers the arm.
It weighs about 300 grams. It is a pair of arm armor. You're pretty sure it's worth about $550 on the open market.
It's a little resistant to slashing, stabbing, and bullets and somewhat resistant to acid and beating.
It's fairly thick.
It wouldn't hamper your movement at all.