Hama Hama no Mi

The Hama Hama no Mi (はまはまの実, Hama-Hama Fruit) is a  that was eaten by a  in the possession of Peg Nez, Hammy-chan.

The Hama Hama no Mi allows its user to turn their body into a storage space that is capable of storing an unlimited amount of objects, even those several times the size of the user.

Etymology

 * Hama is derived from "ハンマー," or "Hanmaa," meaning hammer.
 * Hammer is the shortened form of the word "," which refers to a limitless storage space that defies the laws of physics.

Overview
The Hama Hama no Mi grants the user the ability to store an unlimited amount of objects inside of their bodies, regardless of size. There are seemingly no adverse effects from storing certain objects in the user's body, and they are apparently granted immunity from any potentially harmful properties that the object may have. The most obvious advantage that the Hama Hama no Mi grants its user is the ability to store a variety of objects for later use without having it be cumbersome or otherwise inconvenient towards them. In this aspect, the Hama Hama no Mi can also be ideal for smuggling goods, as they would be invisible and undetectable from the outside.

Other than the standard Devil Fruit weaknesses, the Hama Hama no Mi does not seem to have any weaknesses unique to itself.