They are sealing bags, which are made from food grade PE, PET material, convenient. Perfect for home or shop packing food use. Pack, transport and store without worry. With packaging self-sealing strip can be sealed, sealing effect is not leakage. Features -Color:Transparent -Material:PE, PET -Size:30.00X20.00X8.00cm/11.79X7.86X3.14in -Size:28.00X18.00X8.00cm/11.00X7.07X3.14in -Size:26.00X16.00X8.00cm/10.22X6.29X3.14in -Size:24.00X14.00X6.00cm/9.43X5.50X2.36in -Size:22.00X12.00X6.00cm/8.65X4.72X2.36in -Size:21.00X10.00X6.00cm/8.25X3.93X2.36in -Manufactured with PE, PET material, durable and practical for use. And you can reuse it for packing. -Commonly used in markets, shops, take outlets, and other retail stores. Enough for you to use. -Compact and lightweight, easy to carry, simple appearance, easy to operate. And you can organize your kitchen with these bags. -Great for packing and storing goods, like nut-fruits, loose tea leaf, snacks, coffee beans, dried fruit, etc. - keeping food fresh, reducing food waste and the use of packaging bags. Package list: 2 x Sealing Bags 30x20cm 2 x Sealing Bags 28x18cm 2 x Sealing Bags 26x16cm 2 x Sealing Bags 24x14cm 2 x Sealing Bags 22x12cm 2 x Sealing Bags 21x10cm