Reclosable 3-Wall Specimen Transfer Bag (Biohazard). Made of LDPE material, these Lab-Loc Reclosable Seal Top Specimen Bags provide an excellent package for transferring specimens and paperwork together in hospital and medical environments. The three wall construction provides an outer pouch for accompanying paperwork. The bags come printed with the biohazard symbol. Size: 6" x 9", 2.00 mil gauge. 100/box, 10 boxes/case.