This set includes the following DLC:
- Elie's Swimsuit
- Tio's Swimsuit
- Rixia's Swimsuit
- Noel's Swimsuit
- KeA's Swimsuit
- Lloyd's Swimsuit
- Randy's Swimsuit
- Wazy's Swimsuit
- Daydream 'SSS Summer Splash'

*These items can be claimed from the DLC tab on the Item page. After obtaining the items, they can be equipped from the Costume page on the Camp Menu.

More details on the official game page of Trails into Reverie: SSS Summer Splash Set ...