A knife roll pouch should be sturdy. The CHEF is made of waxed canvas, a wax-coated material that's very durable. The knives won't risk piercing through the fabric of the flaps, and the pouch can withstand the weight of the blades without getting damaged.
We also chose this material for its water-repellent properties. Water will slide off the canvas without penetrating it. It's also more resistant to stains, which is practical if you keep your CHEF by your side while you cook.