This bag works perfectly for storing cell phone in the top compartment and other valuables in the main storage area. You are able to access the phone touch screen through the clear plastic protector with 0 issues; and it has a slim profile which never impeded your legs or pedaling. It's big enough to fit a snack and a juice pouch or 10oz water bottle.Very sturdy and very compact carrier. It's got this stealthy earphone hole for music or calls. Despite facing all the elements, it's stayed strong and dry, all thanks to the waterproof fabric and tight-sealing zippers.