500 3 x 4 Clear Plastic 2 Mil Ziplock Bags Zipper 3x4. This is a new set of 5 packages of resealable plastic bags. Each package has 100 bags. These high quality reclosable plastic bags allow you to have the bags you use most on hand. The reclosable seals open all the way to the edges of the bags giving you full use of the interior. Each has a 2 mil thickness and measures approximately 3" x 4" (76 x 101 mm).