Our bag is made of polypropylene and can sterilize with 121c temperature. Common dimension: 100*80*350*0.05mm, 130*120*500*0.06mm, 200*120*500*0.06mm, 200*120*650*0.06mm, 250*140*500*0.08mm etc. Sample is available. As usual, 250*140*500*0.08mm bag 1000pcs , total weight 29.4kg.We often pack 500pcs / carton. Package weight: 31kg. If we ship the 1000pcs bag to your door by express, the express fee will be more than bag cost. We advise you have 20pcs for test. If ok, you add order quantity and we ship by sea.