New Era Legacy Custom Backpacks, Black Twill Heather Black color_Port Authority_F224 5 ounce 55 45 cotton poly Open collar Style Number:K01038 5 ounce 55 45 cotton poly Open collar Dyed to match buttons Side vents Open hem 100% poly jersey with stay cool wicking technology OGIO Endurance heat transfer label for tag free comfort Center back keyhole cutout with reflective O heat transfer below Contrast binding at neck protective laptop sleeve Extensive office organizer on laptop sleeve with angled pockets Interior zippered security pocket Hat clip loop on exterior top of pack Heavy 080 cubic inches Note: Bags not intended for use by children 12 and under