To provide a finger sack capable of being easily put on/off by solving various blemishes, which can be used for a long period of time, and has a good using feeling and a good appearance as well.

In this finger sack, when the finger sack body is developed into a flat surface, a ratio of an actual area to a virtual surface area is set to be not more than 70%. Also, the finger sack is made of a material which is flexible and has shape retaining property.