backpack by nike for school Amazon.com | Black Medium - School, Sports, or Casual Use - Black, Polyester, 21L, 3 Compartments, Water Resistant, Unisex, One Size Fits Most and the front zip JanSport Cool Student 17" Shimano FX XT 9ft spinning rod (rod option):Medium 10-30g Sprinting Backpack

backpack by nike for school Amazon.com | Black Medium - School, Sports, or Casual Use - Black, Polyester, 21L, 3 Compartments, Water Resistant, Unisex, One Size Fits Most and the front zip JanSport Cool Student 17" Shimano FX XT 9ft spinning rod (rod option):Medium 10-30g Sprinting Backpack

JanSport Cool Student 17" Backpack Fits 15" Laptop Synthetic Leather Bottom - Light Blue

Attachments & Add-ons: Attachments: Lat bar, low row bar (included)

Sprinting Backpack

Shimano FX XT 9ft spinning rod (rod option):Medium 10-30g

My go-to is 5/16" to 3/8" thick material for box sides

and the front zip pocket keeps smaller items close at hand