5 1/2 x 5 1/2 Square Envelopes

Balanced proportions make this size a natural fit for greeting cards, invitations, announcements, and direct mail pieces. The 5 1/2 x 5 1/2 inch size remains compact for everyday stationery while offering a distinctive alternative to standard rectangular envelopes. It suits weddings, seasonal greetings, business communications, and personal cards.

Classic white and natural papers are joined by clear translucent styles, linen textures, bold colors, and metallic tones. Midnight black, red, aqua, pink, green, champagne, and taupe provide options for everything from formal events to colorful promotions. Different finishes also make it easier to match envelopes with business materials, holiday stationery, or personal projects.

When larger quantities need to be assembled, Peel & Seal styles help simplify preparation for invitations, announcements, and customer mailings. The square shape gives marketing pieces and event stationery a less conventional look while maintaining a clean presentation. Businesses, designers, schools, and event planners can use this size for recurring correspondence, special events, and one-time campaigns.