Grassroots California partners with longtime American artist Stanley Mouse, who was prominent in the 1960s for his psychedelic rock concert poster designs. Check out the Sugar Cube Fitted Cap. The dome of this hat has black panels topped with a red button. For the front design, they came up with a circular patch embroidery featuring the Sugar Cube artwork in full color with a black background. The bill has a black uppervisor, and a red undervisor bearing a Stanly Mouse autograph. On the left panel is a Grassroots logo, while the right back panel has a Stanley Mouse icon. Get yours here.