Can fit the following: Pro DSLR with a kit lens attached, flash, hydration reservoir (not included), personal items such as a hat, light jacket, trekking or ski poles, snack, cell phone, keys etc Size on interior compartment: 19.5x9x23cm Adventure pack construction Pending Ultra cinch camera chamber Zippered side access pocket Toploading upper compartment with zippered inner pocket Dedicated hydration pocket with port Multiple attachment points Built in All Weather AW Cover Ultra lightweight, resilient and high performance technical fabrics