Slide-Seal Reclosable 3 Mil White Block Poly Bags 16 x 16 Clear 100/Case 16 x 16 - 3 Mil Slide-Seal Reclosable White Block Poly Bags. Slide lock bags are easy to close and keep products clean and free from moisture. Simply slide the lock across the width of the bag to seal. White block area allows for written information to be instantly visible. Reclosable bags can be reused. Bags meet FDA and USDA requirements. Sizes listed are the inside usable dimensions of the bag. CleanItSupply Slide-Seal Reclosable 3 Mil White Block Poly Bags 16 x 16 Clear 100/Case