Select a variation to see specifications

100g Postal Box Bottom Bags

Name: 100g Postal Box Bottom Bags UK | The Bag Broker
SKU: 070.BB.sz.v.matt.rec
Price: 180.00 GBP
Availability: InStock

£180.00 per box

Select options for unit pricing breakdown

Color

Material

Clear

→ Request free samples | → Need custom printing?

✓ Free shipping on orders over £350

Next-Working-Day Dispatch

In Stock · UK Warehouse

Order From A Single Carton

BRCGS & FSC · Since 2004

// Why Roasters Choose Box Bottom

The premium format that stands square on the shelf

Five printable faces, a flat base and the widest choice of colour, material and closure we stock — in a UK warehouse, ready to dispatch from a single carton.

Recyclable, compostable or PCR

Level 4 mono-PE recyclable, home-compostable NKME and PLA, PCR with recycled content, or classic kraft and high-barrier — your call, all in stock.

Freshness built in

One-way Wicovalve degassing valve on most options lets CO2 out and keeps oxygen out; rip zip or standard zip to reseal.

Five faces for your brand

Front, back, two sides and the base all print or label cleanly, and the bag stands upright without support.

Bulk savings up to 12%

Tiered discounts of 2.5%, 5%, 8% and 12% on multi-box orders — applied automatically in the basket.

Description

Postal box bottom bags sized for the letterbox

Standard box bottom bags look great on a shelf — but they don’t fit postal boxes. These 100g postal box bottom bags do. Designed to slide into A5 mailers, they give your customers letterbox-friendly delivery while you save on shipping. In stock and shipped fast from our UK warehouse, with next-day UK delivery, low minimum order and the option to buy online.

For roasters running subscriptions, sending samples or packing gift sets, these solve a real problem: keep the premium box bottom format without oversized packaging.

Perfect for

Subscription boxes – fits standard mailers, arrives through the letterbox
Sample packs & tasters – professional presentation at 100g portions
Gift sets – compact enough to combine multiples in one mailer
Direct-to-consumer shipping – fewer failed deliveries with letterbox sizing

Specifications

Capacity	100g
Dimensions	165mm (H) x 110mm (W) x 40mm gusset – fits A5 postal boxes
Colours	Matte white, matte black
Material	Recyclable EVOH-PE / White PE, kerbside
Valve	Degassing valve
Zip	Standard resealable zipper
Units per box	500
Pricing	Per box, VAT excluded – bulk discounts on 3+ boxes

Why UK roasters choose these

Letterbox-friendly – fits A5 mailers, fewer “sorry we missed you” cards
Recyclable materials – EVOH-PE / White PE, kerbside recyclable
Degassing valve – releases CO2, keeps oxygen out, preserves freshness
Smooth matte finish – premium feel in black or white
Stable box bottom – stands upright for unboxing impact

Frequently asked questions

What size mailer do these postal box bottom bags fit?

They’re designed for A5 postal boxes (around 235mm x 165mm x 46mm internal), so they post straight through the letterbox.

What colours are available?

Matte white and matte black, both in a recyclable kerbside material.

Do they have a valve and zip?

Yes — a degassing valve to preserve freshness and a standard resealable zipper.

How fast is delivery?

In stock in our UK warehouse with next-day UK delivery on orders placed online before the cut-off.

// See It Before You Buy

Free samples, or a quote for custom print

Order a sample pack to check the size, finish and seal on your own filling line — or send us your artwork brief and we will quote a custom-printed run from 2,000 units.

Request free samples Get a custom print quote

Quantity	Price Each	You Save
3+ boxes	–	– (2.5%)
6+ boxes	–	– (5%)
10+ boxes	–	– (8%)
20+ boxes	–	– (12%)

100g Postal Box Bottom Bags