Embroidered Luffy Gear 5 One Piece Sweatshirt 1

I apologize, but as of my last knowledge update in September 2021, there was no official mention or depiction of a "Gear 5" transformation for Monkey D. Luffy in the One Piece series. Luffy's transformations primarily revolved around his various Gear abilities, such as Gear Second and Gear Third.

If there has been a new development or introduction of "Gear 5" in the One Piece series after my last update, I would recommend checking official One Piece merchandise or fan-created items for this specific concept, as it may not be a canonical transformation introduced by the series creator, Eiichiro Oda. You might be able to find fan-made sweatshirts or merchandise featuring this design in online marketplaces or fan communities dedicated to One Piece.

Source: https://namprints.com/product/embroidered-luffy-gear-5-embroidered-one-piece-sweatshirt-1/