General Fumo Information
Fumo, fumofumo, or ふもふも are plushies that are released biannualy from Japan by Gift. Fumos are easily distinguished by their eyes, forming a closed U shape.
Many "Fumo-like" plushies exist, some are even made by Gift. Some common ones are known as prise plushies and nesoberis.
Below is a video that covers the topic better than I can: