100% polyester flag, 90 x 150 cm.

The Tumblr user no-bucks-for-this-does created the original version of the Bigender pride flag; the creation date of the flag is unknown but is assumed to have existed before July 30th, 2014. It features different shades of pink, blue, and purple. The meaning of the colors is unknown, but it is often speculated that blue represents masculinity, pink represents femininity, and purple represents a mix of genders or androgyny. The white at its center symbolizes the nonbinary nature of bi-gender.

There is, however, another commonly used variation of the Bigender pride flag, which features four horizontal lines in four different colors – pink, yellow, white, purple, and blue. The creator is unknown, and so is the colors' meaning – but it is assumed that the colors have the same meaning as the original flag and that yellow is added to represent non-binary. It was created either before or on August 23rd, 2015.

A bigender individual is a person having or experiencing two different genders of any combination. For example, a bigender person could be both a woman and a man, or be agender and a woman simultaneously. The genders may be binary or non-binary, can be experienced simultaneously or alternately, and may not be experienced equally or in the same way. 

(info: https://www.volvogroup.com/)