These envelopes are designed to hold small clear or cling stamps and a 3" x 4" stamp set will fit perfectly inside. There are ten 4" x 5" plastic envelopes in this package that have a top closure and are made from sturdy, transparent plastic that will last a long time. These small envelopes can also be used for storing small die cuts ephemera, small stickers, embellishments of all kinds, and other thinner crafting items.