SACK-UPS knife protector pouches are sturdy, heavyweight, knitted knife pouches designed to protect valuable knives from rust, dirt, and scratches. Protector pouches are available in six silicone treated sizes (3 for folders and 3 for fixed blades). A 100% cotton product, the pouches keep knives looking new. Ideal for year round storage, at home and in the field. SACK-UPS six pack individual knife pouches will hold 4" folded knives.