This durable substrate is ideal for proofing applications including prototypes for foil product packaging. As with all Epson Professional Proofing Media, this product is manufactured to not exceed a delta E shift of 1.5 to meet a range of application needs. Crystal Metallic Film is the direct replacement product for the now discontinued Metallic Proof Film and offers a higher quality, more durable, instant drying media at a substantially lower cost than its predecessor.