Head swimming buoy
It is described as "fully waterproof" and , "dry bag combined with a tow float that will make sure you are seen in the lake or sea.This really useful piece of equipment is great for holding your gear and then easily inflates to float alongside you, not disrupting your swim, but just letting boats and other outdoor enthusiasts know where you are. This is great if you are swimming from one side of a lake to the other and don't want to leave your gear at the water's edge."
However when you open parcel it has printed on it NO WATERPROOF.
Also there is no info re how big it is.
The advert is clearly very misleading,
other suppliers have highlighted the not waterproof aspect.