Keep your home roasted coffee fresh, or divide up and freeze bulk purchases with these high barrier stand up pouches. The one-way valve lets excess air get squeezed out, but doesn't allow it back in. The thick foil and LLDPE layers keep everything fresh, and even your darkest oily roasts won't soak through these bags. They can be heat sealed for that professional look, and also feature a zip lock closer that makes it easy to re-close. Photos appearing on this web site may not be an accurate depiction of the actual color. Capacity listings are based on whole bean roasted coffee.