What five-letter word, typed in all capital letters, can be read the same upside down?

I put some frozen legumes in a blender, because I wanted to visualize...

Twenty horses race at a steady pace, never breaking, never overtaking. Children laughing, children cheering. No losers here, everyone's winning.

It lies puffy on your bed or folded neatly in a cedar chest. In Australia, a doona, in Indonesia, a bed cover, in England a continental quilt. Someone who soothes you when you are sick or sad. Start with three letters that commonly follow dot, then a place of strong walls filled with defenders. Finish with an uncertain interjection.

A single instant locked away, that neither fades nor slips to gray. Though life moves on and moments flow, I keep a past you used to know.