Agility +25

Required pirate level: 66

Obtained by synthesizing 50 Flamingo Overcoat Fragments and costs 18000 beli.

Flamingo Overcoat Fragment can be obtained from Adventure mode normal or elite missions:
Chapter 10(Thriller Bark), mission 6(The Battle for Superiority).
Chapter 10(Thriller Bark), mission 9(Dead End).

NOTE: For this item, it is far easier to get it from Ordeals, because it spawns a LOT more often. However, you will need a crew level of 75 to enter difficulty 4.