I bought the Daylite about 2-1/2 years ago. I've drugged this bag all over US and Europe. I treat it as my man-purse on travel days, easy grab items on planes - water bottle, book, light jacket, etc. I used this bag for day sightseeing trips throughout Europe and US, in all weather conditions. Enough space for light jacket, camera, snacks, water bottle, and other small items. During winter, it keeps my camera other gear dry. Side pockets do not have any elastic banding, to help hold in water bottles and travel mugs. My water has a lanyard to hold keep the cap attached, so I thread the buckle strap through to keep the water bottle tethered to my bag. My travel mug sometimes jumps out when I put the bag in airplane overhead bins. Adding elastic to side pockets may be easy, but I'm not good with sewing beyond reattaching shirt buttons.
Old Guy Wanders
Grand Junction, CO