Looking for a new backpack? This might be the thing for you. Several materials have been used to make this bag, among them polyamide, and things you want to keep extra track of can
From Amazon
Vaude 14525 Unisex Adults’ Backpacks 15-19L, Umbra, 22 Liters
Hardloop
Vaude Moab Pro 22 II - Cycling backpack Umbra 22 L