After your phone is safely secured in
its iDry, it's waterproof down to 5 metres. But that's no good if you drop
your phone in the water and it sinks to the bottom!
This floating lanyard by iDry attached
to the iDry phone case and provides sufficient buoyancy to keep your iDry and
phone afloat in case you drop it.
The floating lanyard can also be used
with a wide range of other items, including keys and underwater cameras, but
please check that it floats before letting it go!
Have you also considered?