Reusable, transparent polyethylene bags fill a variety of needs. These are ideal for shipping, storage and are especially useful as sample bags. Not autoclavable. The H13176 lightweight bags are .038 mm (.0015"") thick, packed 100 per box, 15 boxes per case. The H13178 heavyweight bags are .1016 mm (.004"") thick, packed 100 per box, 10 boxes per case. Order by complete catalog number and size code.