COLORADO SPRINGS, Colo. (CBS4) – A sporting goods store owner in Colorado Springs decided to close up shop months after he started boycotting Nike products. In September, Stephen Martin, owner of Prime Time Sports, took issue with a Nike advertisement featuring Colin Kaepernick.

(credit: KKTV)

The former NFL quarterback started kneeling during the National Anthem before football games in 2016, sparking a movement among other NFL players, including Broncos linebacker Brandon Marshall.

READ MORE: Denver Tied 126-Year-Old Record High Saturday, Lands In Top 5 For 90 Degree Days

That in turn sparked large outcry from thousands like Martin.

In 2018, Nike chose to feature Kaepernick in one of its ads.

(credit: Colin Kaepernick/Nike)

Martin then decided to sell all of his Nike product at highly-discounted prices, despite him acknowledging Nike merchandise makes up 40-50 percent of the store’s inventory.

READ MORE: Police, Firefighters, Rescue Teams Continue Search For Diana Brown, Missing Flash Floods Ripped Through Poudre Canyon

Fast forward five months.

(credit: Stephen Martin’s Facebook)

“Being a sports store and not having Nike jerseys is kind of like being a milk store without milk or a gas station without gas. They have a virtual monopoly on jerseys. There is no other option,” Martin told the CBS affiliate in Colorado Springs, KKTV.

He added the Christmas shopping season helped, but not enough.

MORE NEWS: Woman Killed While Crossing Broadway, Search Continues For Hit-And-Run Suspect Driver

(credit: Stephen Martin’s Facebook)

Martin says he hopes the wall of military heroes he displayed the outside of his store is what he’s remembered for.