Coffee bag type 1. Side gusseted bag--Sealing way: Back Center Seal, Side-Seal 2. Quad- seal gusseted bags-- Sealing way: Four corners seal, helps the filled bag holds its shape better on the shelf. 3. Stand-up Zip lock pouches: Easy tear notch, Zip lock feature is available. 4. Easy peel mateial gusseted bag We use a special material to make the bag easy to opened with fingers, don't need to take scissor to cut the top of bag any more.