Using your Basil Soho bike backpack is a breeze. First, pack your stuff into the main compartment. You can use the removable neoprene organizer to neatly arrange your laptop, charger, and iPad. To attach it to your bike, use the Hook - On system. Just find a suitable spot on your bike's carrier and secure it in place. When you reach your destination, simply take it off. When wearing the backpack, adjust the padded shoulder straps and back padding for maximum comfort. Remember, the integrated LED strip uses 3x AAA batteries (sold separately). Before each use, check the batteries to ensure the LED works. The Nordlicht Technology is for extra visibility, not a replacement for required bike lights, so always follow local lighting regulations. For maintenance, avoid rubbing the bag against rough surfaces as it can damage the matte PU material. If it gets dirty, gently wipe it with a damp cloth. The bag is waterproof with an IPX3 standard, but don't submerge it in water for long periods.