With a 1 inch expansion, these envelopes are perfect for storing and protecting both documents and small office supplies. Fit standard-sized documents, certificates, files, school projects, pens, pencils, staple removers, and more. Each one is made of pliable yet sturdy plastic material. Their hook and loop closures ensure that they stay closed tightly and can be opened easily. Use them to keep all of your papers, projects, and smaller items clean and safe!Details:Teal8.625" x 11.5" each12 envelopesPlasticFit letter-size documents