I needed to fit a business card and a sample of my product inside the bag, and this will let me do exactly that. I was afraid they would be really thin, but they are actually thicker than expected (think thicker than a Ziploc sandwich bag, but thinner than a Ziploc freezer bag). I did have to contact customer service about a delivery issue, but they resolved the issue within 24 hours. Will definitely buy again when I need more bags!