ORTLIEBPANNIERTAXONOMY (scroll down to get to products)
Note that all pannier models are sold in pairs, so the price displayed on our site is for a pair of panniers.
Differences between the roller and packer models:
The roller models have a roll down lid that provides a completely waterproof seal when closed, similar to dry bags used in rafting. The packer models have an inner drawstring to initially close the bag, and pull over waterproof lid that is secured with buckles. This is how most backpacking backpacks close. Essentially, the roller models offer maximum waterproof protection, while the packer models is easier to open.
Differences between the classic and plus models:
The classic model panniers are made of PVC fabric, while the plus model panniers are made of Cordura fabric. Cordura fabric is a little lighter, more durable, and more flexible than the PVC fabric. The manufacturing process for Cordura is also a more environmentally friendly process than for PVC.
The classic model panniers use the QL1 mounting system, while the plus models use the QL2 mounting system. The difference is that the QL1 hooks that the panniers hang from require an allen wrench to adjust while the QL2 hooks do not. They panniers are equally secure to the rack with either system.
Differences between bike packer/back roller and sport packer/front roller models:
The bike packer/back roller panniers are designed for use as rear panniers, and have a volume of 40 L/2441 cu.in. per pair, while the sport packer/front roller panniers are designed for use as front panniers, with a volume of 30 L/1831 cu.in. per pair. However, you can easily use any of the models as front of rear panniers.
Differences between packer plus panniers and all the other models:
The packer plus panniers have the additional feature of a mesh pocket on the outside, to dry out small items or keep things really handy.