Heavy-Duty Barrier Bags Built for Your Brand
Custom large mylar bags are the go-to packaging format for brands that need serious barrier protection combined with a bold, branded presentation. Used widely for bulk cannabis, kratom, coffee, tea, supplements, jerky, pet food, and other products that require protection from moisture, oxygen, and UV light, large mylar bags offer unmatched shelf life extension in a flexible, retail-ready format. At Teal Packaging, we produce custom large mylar bags with a 2-week turnaround, a minimum order of 50 units, and free shipping to the US, Canada, UK, and Australia.
Our manufacturing partners produce large-format mylar stand-up pouches, flat pouches, and quad-seal bags in a full range of laminate constructions and print specifications. Free design support is included with every order, so your bags arrive print-ready and on-brand without additional agency costs.
For complementary rigid packaging that pairs with large mylar bags in your product line, explore our custom CBD boxes and custom vape boxes.
Materials and Barrier Specifications
The barrier performance of a mylar bag is determined by its laminate construction. Our custom large mylar bags are available in several film constructions to suit different product and shelf-life requirements:
- PET/AL/PE (Standard Mylar): A three-layer construction combining a polyester outer layer, aluminium foil barrier layer, and polyethylene inner heat-seal layer. Provides excellent moisture and oxygen barrier performance suitable for most dry goods, supplements, and botanical products.
- PET/AL/VMPET/PE (Enhanced Barrier): A four-layer construction adding a metalized PET layer for enhanced UV protection. Recommended for light-sensitive products including dried herbs, coffee, and cannabis.
- Matte PET/AL/PE: The standard three-layer construction with a matte finish outer PET layer. Produces a premium tactile surface that accepts ink with a rich, non-reflective result preferred by many premium brands.
- Clear Window Mylar: A construction incorporating a transparent window portion within the aluminium barrier structure, allowing the product to be partially visible from the exterior of the bag.
- Compostable Barrier Film: For brands seeking sustainable flexible packaging, compostable barrier laminate options are available, though barrier performance is lower than aluminium-based constructions. Suitable for products with shorter shelf-life requirements.
All bag materials used by our manufacturing partners are food-grade where required. Print surfaces use soy-based inks across all available constructions.
Customization Options
A custom large mylar bag is one of the most visually impactful formats in flexible packaging because its large print surface can carry bold, full-coverage graphics that compete effectively at shelf or in online product photography. Customization options include:
- Printing: Full-colour rotogravure or digital printing across all surfaces of the bag. High-resolution graphics, photographic images, and fine text all reproduce cleanly on both gloss and matte mylar substrates.
- Finishes: Gloss PET outer layer for maximum colour saturation and shelf impact; matte PET for a premium, tactile brand presentation; partial matte with gloss spot areas for contrast.
- Resealable Closures: Zip-lock press-seal closures in standard, child-resistant, and slider configurations to suit different product categories and regulatory requirements.
- Tear Notches: Die-cut tear notches for easy initial opening on bags with sealed tops.
- Hang Holes: Euro-slot or round hang holes for retail peg display.
- Flat-Bottom Gusset: A structured bottom gusset that allows the bag to stand upright independently on shelf or counter surfaces.
- Spouts and Dispensing Closures: Available for liquid and powder products requiring controlled dispensing.
Our design team will create a dieline specific to your bag format and dimensions and supply a digital colour proof before production begins.
Available Sizes
Large mylar bags are available in a range of dimensions suited to bulk product formats. Common sizes for custom large mylar bags include: For related packaging needs, explore our custom mailer boxes.
- 6 x 9 x 3.5 inches stand-up - approximately 250g to 500g capacity depending on product density
- 7 x 11 x 4 inches stand-up - popular for 500g products including coffee, tea, and supplements
- 8 x 12 x 4 inches stand-up - suits 1kg dry product formats including protein powders, pet food toppers, and bulk herbs
- 10 x 14 x 4.5 inches stand-up - for 1.5kg to 2kg product fills, common in bulk cannabis and agricultural supplement categories
- 12 x 16 x 5 inches stand-up - a large format for 2.5kg to 5kg bulk products and trade or wholesale packaging
- Custom quad-seal and flat-pouch configurations available for specialty product formats
Provide your product fill weight and dimensions and our team will recommend the most appropriate bag size and construction for your specific product and intended distribution channel.
Sustainability Commitment
Multi-layer mylar constructions are one of the more challenging packaging types to make fully sustainable because the combination of dissimilar materials complicates recycling. Teal Packaging is committed to transparency on this issue. We offer compostable barrier film options for appropriate product categories, and we continue to work with our manufacturing partners to expand our range of recyclable mono-material flexible packaging constructions as technology matures.
For brands where aluminium-barrier mylar is required for product integrity, we encourage including clear disposal instructions on packaging and investing in other areas of your supply chain where sustainability wins are more straightforward. Our paper-based packaging formats, including our custom kraft boxes and custom subscription boxes, are fully recyclable and compostable if you are building a mixed-format packaging programme and want to offset flexible pouch volumes with sustainable rigid packaging.
How to Order
Ordering custom large mylar bags from Teal Packaging is a structured process designed to get your specifications right before production begins:
- Step 1 - Request a Quote: Submit your bag format, dimensions, laminate preference, closure type, quantity, and design requirements. We will respond within one business day.
- Step 2 - Proof Approval: Our design team will prepare a flat dieline and a 3D rendered proof showing your artwork on the bag. Revisions are included.
- Step 3 - Confirm and Pay: Approve the proof and confirm payment to enter the production queue.
- Step 4 - Production and Shipping: Orders are completed within 2 weeks and shipped free to US, Canadian, UK, and Australian addresses.
The minimum order is 50 units per design. For brands managing multiple product SKUs across different bag sizes, our team can coordinate multi-SKU production runs to simplify your purchasing process.