This Sack-Ups Protector 18 Knife roll holds up to 18 3", 4" or 5" knives cradled individually in a unique cotton fabric sleave. Utilizing enviornmentally safe oil and silicon impregnated into the cotton fabric, Sack-Ups provide excellent protection from corrosion, shock, heat, water and smoke damage. An excellent and affordable method to safely store your knives. Made in USA