Sai has short black hair, black eyes and pale skin. He is usually carrying a small backpack with his brush, scrolls, and ninja ink inside. He wears a short black jacket with red straps. He carries a tip-less tantō on his back. The outfit consists of a high-collared midriff shirt, black pants, shinobi sandals and gloves with his index and thumb fingers exposed, most likely to facilitate the use of his drawing based techniques.