These 6" x 12" 4-mil reclosable plastic bags feature the color red line, which stands for the highest quality plastic resealable bags in the packaging industry. When you see the "Red-Line" in the resealable top of a Minigrip reclosable poly bag, you will know your products are packaged, shipped, and or stored in the resealable plastic bag for over 50 years. The 6 in. x 12 in. 4 mil medium-weight Minigrip resealable poly bags prevents scratches and keeps out dust, moisture, and oils, making it perfect for medium duty jobs. These Mini Grip plastic 6x12 .004 mil reclosable poly bags are manufactured with 100% virgin resins, meets USDA / FDA requirements for food contact.