The phantom 230 is designed to safely store the bare essentials the slim and subtle design hides the saddle bag neatly under the saddle which means it wont rub against your bibshorts during your ride the patented roller 21 mounting system attaches the saddlebag to the saddle rails without any tools in comparison to ordinary saddlebags with velcro fastening the roller 21 saddle bags prevent abrasion with your cycling kit built into the roller 21 mounting bracket are two tire levers co