Quick answer

For standard A6 cards and envelopes, choose the A6 self seal cello bag. For square 5x5 inch cards, pick the 5x5 size. Both protect your work from dust and damage until gifting or selling.

Why size matters for handmade cards

A bag that's too small won't fit your card and envelope; one that's too large lets the card slide around, which can cause creases or scuffs. Matching the bag to your card size keeps your project secure and presentation-ready.

Self seal cello bags are clear, so the recipient sees your work immediately. A proper fit also makes stacking and storing multiple cards easier without shifting.

Trade-offs between the two sizes

The 5x5 bag is ideal for square cards but won't comfortably hold a standard A6 card and envelope. Conversely, an A6 bag is designed for rectangular cards; trying to force a square card in may wrinkle the bag or the card.

Neither size is a universal solution. If you make both square and rectangular cards, you'll need both packs to keep each project properly protected.

Decision rules for choosing your cello bag size

  • Measure your card and envelope together: Stack your finished card inside its envelope and measure the total width and height. Add 1/8 inch to each dimension for a comfortable slip fit.
  • Match bag size to the largest dimension: If your card is 5x5 inches, use a 5x5 bag. If it's A6 (about 4.1 x 5.8 inches), use an A6 bag. Do not size down. A bag that is too small can tear or leave the card exposed.
  • Consider your gifting or selling plan: For craft fairs or Etsy shops, a consistent bag size for each card shape creates a professional look. Buy the size that matches your most common card format first. Stock both sizes if you regularly make square and rectangular cards.

Product facts

  • Crafter's Companion 5"x 5" Self Seal Cello Bags - 50 Pack: Set of 50 clear plastic bags, each sized to hold a 5x5 inch card and envelope. Perfect for square card makers who want a snug fit that keeps the card centered and dust-free.

    Crafter's Companion 5"x 5" Self Seal Cello Bags - 50 Pack

    Crafter's Companion 5"x 5" Self Seal Cello Bags - 50 Pack

  • Crafter's Companion A6 Self Seal Cello Bags - 50 Pack: Set of 50 self-sealing bags designed to hold an A6 size card and envelope. The standard choice for rectangular A6 cards, offering a tailored fit that prevents sliding and protects edges.

    Crafter's Companion A6 Self Seal Cello Bags - 50 Pack

    Crafter's Companion A6 Self Seal Cello Bags - 50 Pack

Who should choose which size

Best for

  • Card makers who primarily create square 5x5 inch cards and want a snug, protective fit.
  • Crafters selling or gifting A6 cards who need a standard, professional-looking package.

Not for

  • Projects larger than 5x5 inches or A6 — these bags will not fit oversized cards or 3D items.
  • Crafters who need opaque or colored packaging — cello bags are transparent by design.