Built with the class leading durability and design that you would expect from ortlieb the front roller plus panniers are ideal for use as lowrider up front with their rugged construction generous volume and low weight to help keep the weight distribution spot on with the ql21 fitting system they will easily go on most front rack but can also be used on the rear when all you need to carry is a small load which also makes them ideal for childrens bikesthe rolltop closures keeps things waterpr