Specimen Reclosable Bags. -These blue reclosable bags have a zipper seal closure, which has interlocking grooves that press together to provide a secure, leak-resistant closure. -Seal top reclosable bags provide outstanding protection, convenience and economy. -These easy opening bags are perfect to use in health settings such as labs. Dimensions: 6 inch W x 9 inch L Gauge: 1.75 mil Color: blue Quantity: 1000 pack -Zipper bags offer repeated access to contents because of their convenient reclosable zip-type closure. -Designed with strong seals against outside contaminants and moisture, these storage bags are much stronger than traditional low-density polyethylene bags. -The zipper closure type bags are inner-packed in individually-marked dispenser packs for convenience. Reclosable seal top bags can be reused.