Why are Ziploc Easy Zipper Storage Bags rated #1 by consumers? Easy open easy close and you can hear it sealing tight! The easy slider and easy glide tracks offer an open and closure system that you can actually see feel and hear in action. Store and organize just about anything: vegetables fruit cosmetics yarn business cards and more. Ziploc Easy Zipper Storage Bags are made of durable long-lasting plastic and are microwave safe.