In a previous thread, I had asked about the water-resistance of the Tamrac series backpacks:
https://photography-on-the.net/forum/showthread.php?t=422264
Through experimentation, it was found that while most of the bag is rain-proof, the zippers and the back were weak points. While out in the field, your back will protect the backpack's back, but the zippers remained a problem. A rain cover would be the solution, but I had a hard time finding one to fit a bag as small as the Expedition 4.
But now I did!
The extra small (XS) Osprey rain cover fits PERFECTLY!
http://www.mountaingear.com …/item/206287/N/4294967288![]()
Just an FYI for others in the same boat as me.

