Features1) Thickness: 3.34mil (one side)2) Material : Pure aluminum mylar foil3) Design: Open top, with tear notchesUsage 1) The open filling bag can be vacuum sealed as well as heat sealing the open top 2) Perfect for coffee, candy, sugar, rice, baking, cookie, nuts, dried fruit, dried flowers, snack, leisure food, decorations, accessory and so onPlease note that: 1) In order to achieve the effect of vacuum seal, please check your vacuum sealer can vacuum these glossy bags before you order (some vacuum sealer only can vacuum bags with lines) 2) As manual measurement, please allow the size of the item will be a small range error3) Please confirm the size before you place an order TipIn case you need to ensure that no smell leaks, please ensure that the bag have not been previously opened