About this item Outer size: 2.75×3.74 inch, inner size 2.36x 2.55 inch; 100 pieces each pack Material: 5.5mil thick(one side) thickness kraft paper (writing directly on kraft paper) (plastic film inside: grease proofing); Seed collection template, with the preprinted seed collecting template and offers you to fill in information about the seeds Transparent Window: The big window very close to the bottom, even if the bag contains very few seeds, you can identify your products from outside simply Resealable: This packet is designed with a zippered self-sealing strip, so that you can store seeds and still reseal them Heat Sealable: You can either manual seal zipper part, or you can heat seal the open top section above the zipper, then the tear notches enable access even after heat sealing Suitable for saving, storing and collecting your seeds, such as vegetable, fruit and flower seeds, collect sample seed and small items