[Home](./index.md) > [bitburner](./bitburner.md) > [Sleeve](./bitburner.sleeve.md) > [getNumSleeves](./bitburner.sleeve.getnumsleeves.md) ## Sleeve.getNumSleeves() method If you are not in BitNode-10, then you must have Source-File 10 in order to use this function. Return the number of duplicate sleeves the player has. Signature: ```typescript getNumSleeves(): number; ``` Returns: number number of duplicate sleeves the player has. ## Remarks 4 GB