Self Seal Cello Bags – Clear Resealable Polypropylene Bulk Boxes
Our self seal cello bags are clear food-grade polypropylene bags with an integrated adhesive lip — no heat sealer needed. Just fill the bag, peel the strip and press the flap down for a clean, professional seal that can be opened and reclosed. Manufactured in the UK and held in UK stock, they're the fast way to pack greeting cards, cookies, wax melts, prints and craft products at volume.
How the Sizes Work
Every size is quoted as width (W) x usable length (L), plus the lip. The width is always the open side of the bag, and the lip is an extra 20mm on top of the usable length — it folds over and seals the bag, so the quoted size is the space your product actually fits into. For example, 89 x 91mm = 89mm wide (W) x 91mm long (L), plus the 20mm lip.
Self Seal Bag Sizes
| W x L (mm) |
W x L (inches) |
Lip |
Ideal for |
Bulk box |
| 57 x 40mm |
2.25" x 1.6" |
20mm |
Jewellery, beads, small parts |
8,000 |
| 64 x 117mm |
2.5" x 4.6" |
20mm |
Wax melt snap bars |
6,000 |
| 76 x 53mm |
3" x 2.1" |
20mm |
Small sweets, wedding favours |
6,000 |
| 76 x 66mm |
3" x 2.6" |
20mm |
Sweets, fudge, small biscuits |
6,000 |
| 89 x 91mm |
3.5" x 3.6" |
20mm |
Cookies and biscuits up to 80mm |
6,000 |
| 95 x 66mm |
3.75" x 2.6" |
20mm |
Business cards, gift tags |
6,000 |
| 114 x 117mm |
4.5" x 4.6" |
20mm |
Large cookies up to 105mm |
6,000 |
| 127 x 104mm |
5" x 4.1" |
20mm |
Soap bars, chocolate bars |
4,000 |
| 159 x 117mm |
6.25" x 4.6" |
20mm |
6x4" photos and prints |
3,000 |
| 171 x 129mm |
6.75" x 5.1" |
20mm |
A6 greeting card + envelope |
3,000 |
| 184 x 142mm |
7.25" x 5.6" |
20mm |
7x5" photos and prints |
3,000 |
| 197 x 142mm |
7.75" x 5.6" |
20mm |
5x7" greeting card + envelope |
3,000 |
| 235 x 129mm |
9.25" x 5.1" |
20mm |
DL greeting card + envelope |
3,000 |
Need a width we don't stock? We manufacture these bags in the UK and can produce any width from 57mm to 254mm for trade customers with volume requirements — contact us for a quote.
Why Self Seal?
-
No heat sealer needed — peel the strip, press the flap, done. Nothing else to buy.
-
Fast at volume — the quickest way to hand-pack hundreds of items per hour.
-
Resealable — customers can open the bag and reclose it, ideal for retail display.
-
Crystal-clear finish — your product does the selling.
Need Your Bags Printed?
We print bags in-house in the UK, so if you want your logo, branding, ingredients or barcode on the bag, we can print directly onto the film for you. See our custom printed bags for details and to request a quote, ideal for brands that want a professional, branded finish without applying labels by hand.
Who Uses Our Self Seal Bags?
Greeting Card Publishers & Card Makers
Card publishers, artists and online card sellers use self seal bags to protect cards and envelopes through wholesale, retail display and the post. A resealable bag survives being opened and browsed in the shop. Our A6, 5x7" and DL sizes take a card plus envelope inserted through the wide opening. Larger sizes for square and A5 cards are in development — register your interest.
Home Bakers & Cookie Businesses
Individually bagged cookies, biscuits and sweet treats with a professional finish — no sealing equipment needed. The 89 x 91mm and 114 x 117mm sizes cover standard and large cookies.
Wax Melt & Craft Makers
The 64 x 117mm size takes a standard snap bar. Fast to pack, easy for customers to open and reclose, and clear enough to show off colour and detail on the stall or product photo.
Print, Photo & Stationery Sellers
Sized for 6x4" and 7x5" prints, greetings cards and stationery — the self seal lip keeps contents clean without tape or heat.
Key Features & Technical Details
- Material: 30 micron food-grade clear polypropylene (PP)
- Closure: integrated 20mm self seal adhesive lip — resealable
- Sizes: quoted as width (W) x usable length (L); lip is additional
- Orientation: width is always the open side
- Custom widths: 57mm to 254mm available to order
- Printing: in-house UK printing available — see custom printed bags
- Packaging: bulk boxes (quantities per size in the table above)
- Made in Britain: manufactured in the UK by Yolli
Complete the Kit
Customers who buy self seal bags also use:
Trade & Wholesale Information
Business buyers can open a Trade Account and save up to 40% against retail prices — with exclusive wholesale pricing, online ordering and invoice terms. For pallet quantities, custom widths or printed bags, contact us for a quote.
FAQs
What is a self seal cello bag?
A clear polypropylene bag with an adhesive strip on a fold-over lip. Peel the strip, press the flap down and the bag is sealed — no heat sealer or tape required. The seal can be opened and reclosed.
Do the bag sizes include the lip?
No. Sizes are quoted as width (W) x usable length (L), and the 20mm self seal lip is on top of that. A 89 x 91mm bag gives you the full 89 x 91mm for your product.
Are these bags food safe?
Yes, they are made from 30 micron food-grade polypropylene, suitable for direct food contact with cookies, sweets and baked goods.
Can I get these bags printed?
Yes,we print bags in-house in the UK. See our custom printed bags page for details, or contact us with your artwork and volumes for a quote.
Which size fits a greeting card and envelope?
171 x 129mm for A6 cards, 197 x 142mm for 5x7" cards and 235 x 129mm for DL cards — each takes the card plus envelope through the wide opening. Sizes for square and A5 cards are in development.
Can I order a custom width?
Yes — we manufacture these bags in the UK and can produce any width from 57mm to 254mm. Contact us with your size and volume for a quote.
What's the difference between these and your heat-seal cello bags?
Our clear cello bags are sealed with a heat sealer and suit high-volume packing lines. Self seal bags need no equipment and can be resealed — better for hand packing, retail display and anything the customer may open and reclose.
Can I get trade discounts?
Yes – open a Trade Account to access exclusive wholesale pricing and bulk discounts.
