Asaya Chef Knife Backpack with 20-Pocket Knife Roll Bag - Over 30 Storage Pockets Chef Bag, Professional Backpack for Chefs and Culinary Students – Knives Not Included (Black)

If he is carrying that much a knife case / back pack like this one or something similar might be good. I have a waxed canvas case similar to it I quite like when I want to bring my full kit and not just knives.