Foil customized side gusseted bags with valve, direct manufacturer with OEM and ODM service, with one-way valve for 250g 500g 1kg coffee bean, tea and food packaging. Pouch Specifications: 80W*280H*50Gmm,100W*340H*65Gmm,130W*420H*75Gmm, 250g 500g 1kg (based on coffee beans)