These wings are achieved from reaching mastery rank 20. They look cool.
These wings are currently the easiest wings to get (it may take time to get to Mastery Rank 20) and will help you on Sky Realm. The in-game wings are closely related to hang gliders, because you can only glide. So it is recommended that you should start from a high spot (by pillaring or finding a tall building), hold space and move forward.
The wings also does not use Multi-jump.