If you live in a desert region these panniers will do the job for you. However if you live somewhere like the UK and spend a weekend going from London to Manchester, and back again, and it rains, these panniers are complete rubbish. They are made from a material with the absorbancy qualities of sponge and all my clothes were sopping wet at the end of both trips. Don't think the rain covers help either, they only cover about two thirds of the pannier, ie not the wheel side, I had a puddle in one of them when I got back to London. You'd be better off using polythene bags.
nice product with sturdy casing and panniers rack. Just little worried about the clamping system durability since it is plastic and is moving part. tested on road and all is good.