They can grow very large in size. I have seen pictures where they are as big as an adult male hand with their legs out. The body length is about 3cm in size. They have very long skinny black legs with black fury joints. They have elongated bodies that resemble the shape and colouring of a banana. With a yellow and white body. The males grow to only half the size of a females and are darker in colour. The look very scary to me! I wouldnt want to come across one.
I thought they would put a picture of the spider
This is how they look
That was a great answer from ocforlife , but I thought I would add a link to a picture banana_spider