I recently wore this bag for 3 full days around a theme park. Inside I fit: sunglasses and sunscreen for a family of 4, my large wallet, 3 cell phones, a cell phone charger, park maps, tic tacs, an entire large bag of pistachios and two rain ponchos. It was incredible. I chose to wear this as opposed to a backpack because the roller coaster operators did NOT make me take this off go ride the rides because if worn around your waist they allow! While walking the park I wore it as a sling in front of me which gave easy access to my cell and it kept my items very safe, during rides I lengthened the strap to wear around waist, I'm taking away one star because it takes a bit of effort to yank the strap tighter or looser, which is probably good in the long run because it never loosens when wearing, but I was scrambling to adjust it last minute during the rides. I will be using this sling on any day or weeklong trip I take! A real winner.