Looplet

Looplets are held items exclusive to Pokémon Super Mystery Dungeon. When held, they are capable of greatly enhancing a Pokémon's natural abilities.
Each kind of looplet has a number of notches, each of which can be filled with any emera the party finds in a dungeon. Each emera set in a looplet grants passive effects to the Pokémon holding it. Using an Emera-Up Orb on a looplet will increase its number of notches by one, up to a maximum of 8, for the duration of the adventure in a dungeon. All emeras set in a looplet disappear upon exiting a dungeon.
Additionally, most looplets have an innate passive effect. Many of these effects are similar to those found on scarves in previous games.
Some ordinary looplets also have a variant indicated with a red outline in the Treasure Bag. These looplets generally have two extra notches; however, the Attack, Defense, Sp. Atk, and Sp. Def looplets have only one extra notch. Additionally, with the exception of the Gold Looplet, the buy and sell prices of these looplets are 50% higher. Although variant looplets are generally rare, all looplets sold at Glorious Gold are variants, with the exception of treasures.