It has no usage other than being worn as a cosmetic. When a baby uses them, the floaties keep them afloat in the water. The only other items which can keep a player afloat are: Pizza Float, Mermaid Float, Lazy Float, and Inner Tube. Other than that, it does nothing else.
It looks blocky, as to accommodate the arms of some Roblox avatars, even though those particular avatars are not supported in Adopt Me!.