This pannier model boasts a flap top, making for great ease of use. As opposed to roll-closure systems, the flap top does not form a long "tunnel" through which you need to dig for your stuff. The Sport-Packer Plus is highly practical thanks to its 30 liter/pair size: it is equally at home on rear and front racks. - Flap top makes for easy operation - Waterproof structure - Welded seams - Made of polyurethane coated Cordura fabric - Includes fittings for different thicknesses of pannier frame - High quality 3M reflectors -The Quick lock system grabs your rack - the bags don't just hang on - Easy to clean and highly durable thanks to materials - 5 year guarantee Delivery contains two bags. Weight and volume reported for pair. By adding one of this product in the shopping cart, you'll receive two bags.