Custom Frosted Zipper Bags vs Polymailers: Which Is Right for Your Brand?

When you're deciding on custom packaging for your UK small business, two products consistently come out on top: frosted zipper bags and custom polymailers. Both are printable, available in black and white, and designed for small businesses that want to present their brand properly.

But they're not interchangeable. Each has a distinct character, a different job to do, and a different customer experience it creates. Choosing the wrong one won't ruin your business — but choosing the right one can genuinely elevate how your brand is perceived.

Here's a clear breakdown to help you decide.

What Are Frosted Zipper Bags?

Frosted zipper bags are resealable bags made from a semi-translucent frosted film. They open and close with a zip-seal mechanism, making them reusable and practical for customers to keep.

They're commonly used by:

• Clothing boutiques (customers can store items before trying them on)
• Jewellery and accessories brands
• Cosmetics and beauty businesses
• Gift businesses (the bag itself becomes part of the gift)
• Anyone selling at markets, pop-ups, or in-store

The frosted material gives them a premium, boutique quality. When your logo is printed on the front in white or black ink, the result looks clean, minimal, and considered.

Key specs at The Craftionals:

• Available in: White and Black variants
• Printing: One side, one colour
• Sizes: 8×10cm up to 30×40cm
• Minimum order: 50 units

What Are Custom Polymailers?

Custom polymailers are fully sealed mailing bags with a peel-and-seal strip at the top. They're designed for one thing: dispatching orders safely through the post.

They're commonly used by:

• E-commerce clothing and fashion businesses
• Online retailers shipping soft goods
• Subscription box services
• Anyone dispatching lightweight orders through Royal Mail or a courier

Polymailers are lightweight (which keeps postage costs down), waterproof, and built for the realities of UK postal handling. They're not resealable — once opened, they're done. But for e-commerce, that's absolutely fine.

Key specs at The Craftionals:

• Available in: White and Black variants
• Printing: One side, one colour
• Sizes: 22×36cm up to 60×80cm
• Minimum order: 50 units

The Key Differences

Functionality

This is the biggest distinction. Polymailers are for posting. Frosted bags are for presenting.

A polymailer gets your product safely from your hands to your customer's door. A frosted zipper bag creates a moment — the customer opens their delivery, and inside is a beautiful frosted bag containing their order.

Some businesses use both: a plain polymailer for the outer postal layer, and a frosted zipper bag inside for the product itself.

The Customer Experience

Polymailers are functional and clean. Customers expect to receive orders in mailing bags — it's a normal part of online shopping. A well-branded polymailer still impresses; it just does so in a matter-of-fact way.

Frosted zipper bags feel more like a gift. They communicate that extra thought went into the presentation. Customers are more likely to keep and reuse the bag — extending your brand's visibility well beyond the initial purchase.

Resealability

Frosted bags can be opened and closed multiple times. This is especially valuable for clothing (try-before-you-commit) and anything that needs storing between receipt and use.

Polymailers are single-use. Once the peel strip is pulled, that's it.

Size Range

Polymailers come in larger sizes to accommodate bulkier shipments. If you're shipping larger items — bundles, multiple garments, or anything A4-sized and above — polymailers offer more size options. Frosted zipper bags work best for smaller products.

Price

Both are similarly priced at The Craftionals. Both start from £44.49–£44.99 for 50 units in their most popular sizes. The cost depends more on the specific size you choose than the product type itself.

Which Should You Choose?

Choose polymailers if:

• You're primarily an e-commerce business dispatching orders by post
• Your main concern is fast, waterproof, cost-effective packaging for shipping
• You're dispatching larger or heavier soft goods

Choose frosted zipper bags if:

• You sell in-person (markets, retail, pop-ups) as well as online
• You want a premium presentation for your products
• Your product is smaller — jewellery, accessories, cosmetics, small clothing items
• Reusability matters to your customers

Consider using both if:

• You ship online but want an impressive product presentation inside the mailing bag
• Your brand operates across multiple channels with different packaging needs for each

Can I Use Both?

Absolutely — and many growing UK businesses do. A common approach is to ship orders in branded black polymailers (clean, bold, e-commerce) and use white frosted zipper bags for in-person or event sales (premium, boutique, giftable).

Starting with one and adding the other as your business grows is a perfectly sound approach. Most small businesses begin with polymailers for their online orders and introduce frosted bags when they start attending markets or events.

Ready to choose? Get a free quote for either product — we'll respond within 24 hours and send a free digital proof before anything is printed.