Features: 1Sealed with no air leakage the doublelayer zipper allows the vacuum bag to be sealed for a long time. 2Made of foodgrade PE + PA low temperature resistant and environmentally friendly material durable and reusable. 3It adopts automatic sealing suction port and automatic sealing technology does not need cover and selfadhesive sealing. 4It can vacuum encapsulate uncooked meat cooked food vegetables candies dried fruit and pet food. 5The transparent is easy to display you can record in the blank area such as food name and date. Specification: Item Type: Vacuum Zipper BagsMaterial: PA+PEColor: As shown in the pictureSize: Approx. 50x35cm / 19.7x13.8inWeight: Approx.74g/2.6ozApplication: Food pumping and keeping freshnessCompression Form: Three-dimensional air extractionSteps:1. Install a safety ring the water in the ring is almost full and needs to be drained2. Use a scribing clip to seal and anastomose multiple times3. Connect the interface and start pumping4. The effect is visible in a few seconds wipe it twice with your hand after pumping Package List: 2 x Vacuum Zipper Bags Note: 1. Please allow 12in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3. Need to be used with a vacuum pump (not included).