Features : safety: bpa free, microwave safe and sous video. one for all - designed for use with all vacuum packaging seal machines. durable - commercial grade multilayer material that locks in oxygen and moisture and eliminates freeze burns and dehydration. affordable : 2 bundles rolls 28cm wide, and 5 meters long, which is 10metersin total. make your own bag length. specifications : 2 pack roll - 5m (x2) - 28cm wide -model sbs-540