|Carradice Kendal Pannier|
|Zimbale 7L Saddlebag|
Zimbale bags use a quick "Sam Browne" style closure that does not require undoing the buckle. This is the biggest reason I favour my Zimbale over my near-identical Carradice; it simply takes me less time to open and close the bag. I've had this bag for 2 years now, and over time there has been some stretching in the leather eyelets, but not so much that the closure comes undone.
Philosophy bags use a snap closure, also independent of the buckle. It works well and does not seem to stress the leather. I sometimes worry about the security, but it has not come undone as of yet.
Ironweed Pannier (more pictures and review soon)
Nylon cords with plastic buckle closures seem pretty easy and convenient, but it's a system I haven't used until just now.
|Ostrich Handlebar Bag & Berthoud Medium Handlebar Bag|
I love the simplicity of elastic closures. But in my experience, it's not always easy to get the tension of the elastics just right, and I've been in situations where various parts of my handlebar bag have flung open en route. The elastics also tend to stretch out over time, so they may need to be tightened or replaced after some use.
|Fastrider Deluxe Shopper Pannier|
Zipper and velcro closures work nicely - except when the bag is full and cannot close completely.
|Po Campo Loop Pannier|
All closure systems seem to have their pros and cons - from ease of use, to security, to durability. Overall I tend to favour the quick and easy methods, though I do wish I had the patience and digital dexterity for tiny buckles.
What closure system do you prefer on bicycle bags?