These are a 100 pack of 2 mil thick Zippered bags. Many different sizes available. They hold the scent long and can be easily opened and closed.
The sample bags are around 5 mil thick and are scent proof.
The 5 7/8" x 3 1/2" x 9 1/8" Frosted bags are our 1 lb barrier bags for scented beads. Will Keep fresh for over a year.