Softboy (also known as soft boy or softboi) describes a less masculine boy who is described as "cute" based on their soft or gentle characteristics. Mainly boys who express their softness a lot. It can be used to describe trans men who do not subscribe to every element of traditional or mainstream masculinity.
The girl equivalent is softgirl.
Flag
The softboy flag was created by Tumblr user beyond-mogai-pride-flags on July 21, 2018.[1]