
Varnish
A transparent finishing layer available in gloss, satin, or matte effects. It enhances the printed surface and adds an extra layer of visual appeal and light protection.
A gallon is a measure of space, so the quantity a 1 Gallon Mylar Bag gives you depends on what you fill it with. Printed to your own artwork, with the film and the closure specified around the product. Orders start from 100 units.
Most people arrive here looking for a number: how much a gallon bag takes. The gallon is already that number, and it measures room instead of contents, so it stops just short of the thing you came to find out. Your own product is what closes that gap, and this page spends most of its time there.
A gallon of space weighs nothing until you fill it, and then your product decides. Dense free-flowing goods, the rice, sugar, salt and flour end of a store cupboard, settle tightly and make a heavy bag. Bulkier goods sit loosely, trap air between the pieces and fill the same gallon at a fraction of that weight. Two brands can order the identical bag and walk away with very different pack weights and a very different pallet.
There is a second wrinkle in the unit that nobody on this term mentions. A gallon is not one volume: an imperial gallon is about 4.5 litres and a US gallon about 3.8. That difference is wide enough to matter if your fill sits anywhere near the top of the bag, so confirm which gallon a quote is built on, ours included.
So the first question back from us is about the contents before it is about the size. Weigh out what you intend to put in one bag and send us that figure. The gallon then stops being a guess at either end, and a correction at that stage costs nothing, where a correction after a run costs the run. That assumes a trade order: these are made to order in quantity and printed with your own artwork, so a cupboard’s worth of bags with oxygen absorbers thrown in is better bought from a shop.
Mylar is a trade name for a polyester film, and on its own it tells you very little. What does the work is the construction around it. Polyester film, which is what mylar is, aluminium foil, and PE and PP layers are each available, depending on the product and the specification, with any barrier construction settled for that order. All Custom Packaging works that construction out with you, so the film is chosen around the contents and how they will be stored. A bag built with a metallised or foil layer behaves differently from a clear single-layer one.
The visible part of that choice is easy to weigh up. A clear bag shows the contents, and light reaches them too. A metallised or foil build is not see-through, so the view goes and far less light reaches what is inside. Film gauge pulls in the same direction: a heavier film resists puncture and handles more stiffly, a lighter one creases more easily and costs less. We publish no gauge for this product. The gauge belongs to the specification, and what a given construction actually holds out is confirmed against that specification instead of promised in advance.
How the bag closes is a separate decision from what it is made of, and on a storage bag it often matters more. A resealable zip suits a pack that gets opened and closed over weeks. A bag filled once and left alone has no use for one, and a zip nobody reseals is a cost with no job attached. A resealable or zip closure is available, settled alongside the rest of the specification.
Then there is the air. A bag is the layer around the contents, and it does not remove what gets sealed in with them. How much air stays inside is decided by how full the bag is and how it is closed, and both of those happen at your end. If oxygen absorbers are part of your process, say so early, because that changes the headspace you want and sometimes the size you order.
A bag is close to one large printed face, which makes print a bigger part of the decision here than it is on a box. A single mark or a whole-bag design are both workable, in offset, digital or screen printing. Pantone references and CMYK values can be used to manage colour consistency, subject to normal variation caused by the chosen board, ink, coating and production method. The film is one of those variables. A brand colour that sits confidently on a white face will read differently on a clear or metallic one, which is worth seeing before the run.
Design support is free. Our designers build the artwork to the bag instead of squeezing it on. A digital 3D mock-up is free. On a format this simple it answers one question in particular: where do the seal and any zip eat into the area you thought you had. The approved specification and artwork stay on file too, so a reorder can be set against the version you already signed off.
Orders start from 100 units. The minimum applies per design, so two labels in the same size count as two lots. Standard production takes 6 to 8 business days after approval. UK delivery is free. There are no setup fees.
Where the bag holds food, the material has to suit that food, and that is settled on the material itself. Food-contact material suitability is confirmed for the specific material before production. The pack’s wording is a different question with a different owner. Confirming any information printed on the bag remains your business’s responsibility, or that of its regulatory adviser. What we can do is leave honest room for it. An ingredient list, an allergen statement, a weight or a batch code gets planned into the layout, instead of being wedged into whatever space the design left over.
A gallon is a bulk size, not a shelf size. It holds a quantity for storing or moving, and a retail portion inside one looks exactly like a retail portion inside a bag built for ten of them. If you are packing by portion, the weight-based sizes are the right end of the family: 1 Pound Mylar Bags and 1kg Mylar Bags are specified the way a retail pack usually is, and Small Mylar Bags covers the smallest units.
A bag has no shape of its own. It takes the form of whatever is inside it, it will not stack squarely, and it gives nothing at all to a product that has to arrive undented. Where the pack has to hold its form on a shelf or be opened as part of the experience, that is a carton, and Custom Food Boxes covers those formats. Plenty of brands run both, with the bag doing the containing and the box doing the presenting.
The rest of the family sits under Mylar Bags. Mylar Food Storage Bags takes the general food-storage case across every size. Zipper Mylar Bags is built around the reseal, and Vacuum Seal Mylar Bags is the format where the air comes out mechanically. For the two film choices, Transparent Mylar Bags is the see-through build and Thick Mylar Bags the heavier film.
| Box Style | All Custom Packaging |
| Dimension | All Custom Sizes & Shapes |
| Quantities | 100-unit minimum order |
| Paper Stock | Kraft, corrugated, rigid board, cardstock |
| Printing | CMYK, Pantone, digital and offset |
| Finishing | Gloss, matte, spot UV, embossing, foiling |
| Shipping | Free delivery options |
Choose from premium coating, board, printing and finishing options for your insert boxes.

A transparent finishing layer available in gloss, satin, or matte effects. It enhances the printed surface and adds an extra layer of visual appeal and light protection.

A UV-cured coating applied to specific areas of the design to create gloss or matte contrast and draw attention to important details.

A smooth, velvety coating that creates a soft tactile feel and gives packaging a refined luxury look. It improves the unboxing experience and supports a high-end product presentation.

A soft, smooth lamination with a refined satin-like finish. It gives packaging a premium feel while keeping the surface elegant, subtle, and easy to handle.

A high-gloss UV coating applied only to selected design areas to create sharp contrast, highlight logos, and add a premium visual effect without coating the whole surface.

A clear, fast-drying water-based coating that adds a smooth protective layer while maintaining a clean and professional surface finish. It is a practical choice for everyday printed packaging.

A durable protective film that helps reduce visible scratches, scuffs, fingerprints, and daily handling marks. It keeps packaging looking clean, polished, and premium for longer.

A bleached kraft paperboard made from a mix of virgin and recycled pulp, offering a clean white surface for crisp and polished packaging designs.

A natural kraft paperboard without coating, made from virgin and recycled pulp. It provides a raw, organic appearance with sturdy packaging strength.

A premium bleached paperboard coated on both sides, designed for excellent print quality, die-cutting, and professional packaging results.

A high-quality bleached paperboard coated on one side. It provides a clean printable face with a premium packaging feel.

A smooth printable paper stock that supports high-resolution graphics, clean text, and rich color output for refined packaging presentation.

A natural kraft paperboard made from strong virgin and recycled pulp. It provides an organic, earthy look for sustainable and simple packaging.

A specialty paperboard with a laminated metallic surface available in gold, silver, and other premium finishes for luxury visual impact.

A specialty paperboard with a laminated holographic surface that creates a reflective, rainbow-like appearance for eye-catching product packaging.

A recycled duplex paperboard with a white printable surface. It is ideal for economical packaging that still requires clean graphics and brand presentation.

A kraft board with a smooth clay-coated white face for quality printing and a natural kraft reverse side for a strong, authentic appearance.

A kraft paperboard with a clay-coated printable top surface and a natural unbleached kraft back. It balances clean branding with a rustic natural look.

A duplex paperboard made with recycled pulp and a coated white printable surface. It delivers smooth print results for affordable carton packaging.

A black-dyed kraft board with a natural paper texture and excellent strength. It creates a bold, premium look for luxury and specialty packaging.

A packaging technique where a die-cut opening is covered with a transparent film, allowing the product inside to remain visible while staying protected.

An embossing technique where the raised design is precisely aligned with printed artwork to improve detail, texture, and overall presentation.

A finishing process in which heat and pressure transfer metallic foil to the surface, creating a premium, shiny, and luxurious effect.

A premium finishing method that combines embossing with foil stamping to create a raised design with metallic color and strong visual impact.

A decorative process that transfers foil onto selected areas of the surface using UV-curable adhesive, creating a bright metallic effect with sharp detail.

A technique that raises a design from the surface without ink or foil, giving packaging a clean, elegant, and textured appearance.

A finishing technique that presses a design into the material to create a recessed impression without using ink or foil. It adds subtle depth and a refined tactile effect.

A fast-curing printing process that uses ultraviolet light to dry ink instantly, delivering sharp detail, vibrant colors, and a premium finish.

A durable printing method that uses a mesh screen and stencil to apply ink to surfaces. It is ideal for bold colors and high-impact packaging designs.

A traditional high-quality printing process that transfers designs from plates to a rubber blanket before printing, making it ideal for large-volume production.

A modern printing method that does not require printing plates, making it cost-effective and efficient for short runs, sample production, and small-batch quantities.

Built with three corrugated layers between four linerboard sheets, providing heavy-duty strength for large or industrial packaging needs.

A standard corrugated structure with one fluted medium and two linerboards, providing dependable strength for everyday packaging.

A corrugated sheet with one flute layer between two liners, offering lightweight strength for protective packaging.

An ultra-thin flute grade designed for lightweight packaging, small retail boxes, and high-quality printed presentation.

A slim flute grade with a flatter surface, ideal for detailed printing, display packaging, and premium retail boxes.

Made with two layers of corrugated medium between linerboard sheets, offering added strength and durability for heavier products.

A versatile corrugated flute that offers balanced compression strength, cushioning, and printability for many packaging applications.

A thinner flute grade with a smooth surface, making it suitable for high-quality printing, precise die-cutting, and neat retail packaging.

A thick corrugated flute profile that provides excellent cushioning, compression strength, and stacking support for protective packaging.

A coated linerboard with an off-white surface, suitable for high-quality printing and a refined packaging appearance.

An unbleached kraft linerboard made from recycled paper pulp, offering a natural look with strong durability for eco-conscious packaging.

A coated semi-gloss linerboard with a smooth white surface, ideal for sharp printing, premium presentation, and retail-ready packaging.

A fully bleached corrugated board with a bright white surface, designed to produce clean, vibrant, and high-quality printed packaging.

A UV-cured ink that dries instantly under ultraviolet light and creates crisp, high-quality print results on a wide range of packaging materials.

A plant-based ink made with soybean oil, offering rich color output and a more sustainable printing option for carton packaging.

A standardized color-matching system used to achieve consistent, accurate brand colors across packaging, labels, and printed materials.

A full-color printing process using cyan, magenta, yellow, and black inks to create vibrant images, gradients, and detailed packaging artwork.
Real feedback from customers who trust us with their custom packaging.
Clear answers about ordering, artwork, production, materials and delivery.
Orders start from 100 units. On a gallon bag that is worth pausing over, because a hundred of them is a hundred gallons of product to fill, which is a much bigger commitment than a hundred small retail pouches. Standard production takes 6 to 8 business days after approval. UK delivery is free.
They do two different jobs. The bucket takes the knocks, the stacking and the handling, and the bag is the layer sitting around the contents inside it, which is why the two are so often used together. What that layer holds out depends on the film and foil specified for it, so the construction follows from what you are storing and how long it has to sit there.
Yes, through a different line. Blank Mylar Bags is the unprinted, ready-to-go route, and because that is stock rather than a print run, what is available and how soon it ships is confirmed with your quote.
Not straightforwardly, and it is better to hear that now. An unlaminated paperboard construction may be easier to process through suitable paper-recycling streams than a heavily laminated alternative. A mylar bag sits at the far end of that comparison: a multi-layer film, often with foil in it, which kerbside paper collections are not built to handle. Final recyclability depends on the full material and finishing specification and the facilities available locally. If recyclability is driving the brief, raise it before the construction is settled.