<https://safbankproducts.com/product/12140-drive-up-envlopes/#product>
<http://schema.org/description>
"Envelope size is 3 3⁄4x7 inches, and run in two colors. (3 1⁄4x7 size available at no extra charge!) Your orders are packaged in boxes of 500 within each case for easy handling. If your custom design includes a logo, there is NO CHARGE for adding your logo to ANY envelope!"
<https://safbankproducts.com/product/12140-drive-up-envlopes/>