What's the noun for polos? Here's the word you're looking for.
polo
(uncountable) A ball game where two teams of players on horseback use long-handled mallets to propel the ball along the ground and into their opponent's goal.
A similar game played on the ice, or on a prepared floor, by players wearing skates.
“Well, you don't play polo because you need that down payment on your mortgage.”
“Polo players have individual preferences for the amount of whippiness they need to properly time the hitting of a polo ball.”
“They wore white pants, boat shoes, and red polo shirts with the emblem of the Grand Seclusion Resort.”
polocrosse
A goal game combining elements of polo, lacrosse, and netball, played by teams of six players mounted on horseback and using a sponge rubber ball and a stick with a head like a cross and a handle and shaft like those of a polo stick.
“I recently got hooked on white short sleeve undershirts and wear them under polos or button down shirts every day.”
“So for seventeen years the three polos abode in the Khan's service in China.”
“A few years ago I spent several weeks in Florida carrying a 3913 in an LFI Concealment Rig under untucked tees and polos, never once needing an outer garment.”