amazonbasics carry-on travel backpack or ebags tech 3.0 backpack Amazon Basics Backpack,Carry-On with Laptop Compartment, 1.55 cu. ft. Capacity,Expandable for 10% Extra Space,Convertible & Shoulder Bag,Multiple Pockets,13.8"W x 21.5"H x 9.5"D, Black mother gifts on backpack Nike, Backpack, 32L, Unisex Size:L Inner Capacity: Height 12.8" x Width 9.8"

amazonbasics carry-on travel backpack or ebags tech 3.0 backpack Amazon Basics Backpack,Carry-On with Laptop Compartment, 1.55 cu. ft. Capacity,Expandable for 10% Extra Space,Convertible & Shoulder Bag,Multiple Pockets,13.8"W x 21.5"H x 9.5"D, Black mother gifts on backpack Nike, Backpack, 32L, Unisex Size:L Inner Capacity: Height 12.8" x Width 9.8"

Nike, Backpack, 32L, Unisex Backpacks, Midnight Navy Black Iron Grey

Ideally, the size should be between 20-25L if you don’t carry your own camping equipment

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Size:L Inner Capacity: Height 12.8" x Width 9.8"

Additionally, I added my standard first aid gear in the lower front pocket

on backpack