Our collection of 4bar Envelopes will cover your material beautifully, bar none! 4bar Envelopes are also known as A1 Envelopes or response card envelopes, and measure in at 3 5/8 x 5 1/8 inches. It is considered the smallest mailable envelope for US mail, sure to make everyone notice in their pile of mail. Ideal size for RSVP cards, thank you notes, or smaller invitations. We've categorized our page by color so that it will be easy to navigate through and pick your favorite. As you click on your favorite color, you'll be able to find an assortment of different textures, styles, and shades.
Try our Red or Green 3.625 x 5.125 envelopes to use for those exciting RSVP cards. They take one look at the vibrant Brite Hue colors and will be even more excited that they're on the guest list. Make a professional statement while keeping a pop of color with our deep purple envelopes. Or electrify your guests with our yellow shades. We even have a collection of stardream metallic shades! This way your RSVP notes will shine bright. As you search even further, we have an assortment of Parchment choices that will give a natural look into your envelope. Or try our translucent envelopes, sure to give a unique edge into all of your mailing. These sweet and small senders are sure to give your recipient some needed smiles.