The HA107 pant is a modern take on the OG 107 pants, originally developed by the US Army in the late 1950s. The OG stands for olive green, which was the color of the pants. The HA107 pant is made of herringbone cotton twill and features a high waist with belt loops, a button fly, and back pockets. These pants gained popularity among civilians during the 1960s and 70s as a symbol of counterculture and anti-authoritarianism. Today, the OG 107 pant is still used by the US military and is also highly sought-after in the fashion industry. To complete the look, the HA107 pant can be paired with a variety of tops, including the Collister crewneck T, Leonard v-neck, or the CPO button down.