The Marine Corps Combat Boot is on track to become the service’s standard-issue seabag boot.

As the service moves toward the boot’s Oct. 1 adoption date, Marine officials set out to dispel any confusion as to which boots Marines can wear in uniform.

Four brands, each with a temperate and hot-weather variant, were identified last week by Marine Corps Systems Command in Marine administrative message 117/16, along with the approved list of Danner Rugged All-Terrain boots.

Here’s a breakdown of Marines’ current authorized footwear, along with boot name and cost according to the brand’s website: