From Starbounder - Starbound Wiki
Mannequin is a craftable display stand for armor. Armor can be slotted into the mannequin's armor slots to display it, or it can be quick swapped with the player's currently equipped armor.
There are three buttons inside the Mannequin window;
- Swap Gender - Changes the mannequin's gender, and any clothes on it will display gender differences
- Equip (Functional) - Swaps the mannequin's armor with what's in the players functional slots
- Equip (Cosmetic) - Swaps the mannequin's armor with what's in the players cosmetic slots