Definitely not...

...a 'body bag'.

Chambers Dictionary
"body bag noun a bag made of heavy material, closed with a zip, in which a dead body, especially the body of a war casualty or accident victim, is transported."

No, Alexa, it's definitely not one of those. It's just a little cross-body bag (or sling bag) in which to carry a few items when it's not appropriate to carry a handbag, but your daypack is too big. 

ION: The forecast for tomorrow is atrocious - wind and heavy rain. Decided to take advantage of today's dry weather, abandoned all the household chores and spent much of the day gardening. So much to cut back, much of it spirea douglasii...