This snake is very slender, roughly 2 cm (0.79 in) thick, and may attain a total length of about 1.5–2 m (59–79 in). The tail is long and very delicate, but mostly used to hold on while reaching for prey. The head is aerodynamically shaped and very pointy, the mouth is very large and extends almost the whole length of the head. The tongue is long and green; when in use it is kept outside the mouth and moved up and down.