ABSOLUTELY AIRTIGHT – Once sealed with oxygen absorbers inside, these bags won't let any air in, eliminating any worries about damage! 
FOOD GRADE – Made from food grade material. No need to worry about your food: just seal the bag and you’re done!
STRONG MATERIAL – Made with high quality PET/AL/PE. The material is strong and does not tear or get punctured easily, allowing you to store anything you need.
HEAT SEALABLE BAGS – With a strong heat-sealed closure, you can guarantee the longevity of your food. It can be sealed airtight with a regular household iron, a hair straightener, or an impact sealer to block oxygen from spoiling the content.