US$ 25.14
cool leather camera backpacks Cwatcun 3-in-1 Retro Bag, PU Camera Crossbody/ Backpack/Case Snack size Cotopaxi Allpa 35 28 color:Cactus one zipper pocket
Cotopaxi Allpa 35 28 comparison image : r/HerOneBag
Both are designed to expand or contract depending on the size of the water bottle placed in the central compartment (it can handle 1 liter bottles), so a skinny water bottle will allow you to carry more in the side pockets
Snack size
color:Cactus
But I will say this in the most honest way: it can feel a little too big depending on your grade/height and how much you actually carry
one zipper pocket
US$ 25.14
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