A 5 × 5 envelope is designed to neatly hold square stationery including:
125 × 125mm inserts
Square wedding invitations
Save the dates
RSVP cards
Birthday cards
Thank you cards
Anniversary cards
Handmade greeting cards
Small photo prints
Keepsake notes
Craft stationery
Gift enclosure cards
Choosing a 5 × 5 envelope gives square cards enough room to slide inside comfortably without feeling loose or oversized. Its compact, balanced shape helps invitations, handmade cards and keepsake stationery look tidy, protected and beautifully presented for weddings, celebrations, gifting and everyday occasions.