Using your Basil Bloom Field double pannier bag is a breeze. First, decide how you want to attach it to your bike carrier. You can use the pre - mounted straps with the Universal Bridge system. If you have the Basil DBS system or MIK adapter plates (you'll need to buy them separately), you can combine them for a more customized fit. For heavier items, don't forget to use the Basil Distance Holder (also sold separately) to avoid the bag getting into the spokes. When packing, you can load up to 28 - 35 litres of groceries or other items. The bag's zipper and Velcro closure will keep your stuff secure. And thanks to the waterproof features, it can handle light rain. After each use, just wipe it down with a damp cloth to keep it clean. If it gets really dirty, you can gently hand - wash it with mild soap and let it air dry. Make sure to always check the reflectors are clean for maximum visibility in traffic.