This hidden pair of red gloves in Batman: Arkham Asylum supposed to symbolize

batman-arkham-asylum

I was playing Batman: Arkham Asylum and during my travels, I found this item set locked away behind an unpassable vent bar.

It's a single cell, not available to get, just out of reach.

What is this supposed to reference, or is it just random?

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Here's a zoomed version I took using my Bat Zoom:

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I think that engraving is of Arkham Asylum itself? Who does this belong to?

Found it while playing the game on my PC. It's location on the map is:

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It's one of the Riddler's items: the Ratcatcher's equipment.