Bulk Mixed Mailing Bags Mega Bundle – 600 Bag Variety Pack (A4, A3, A2)

£29.99

The Ultimate Inventory Solution: The Packaging365 Mega Bundle.

When you buy our Bulk Mixed Mailing Bags, you ensure your packing station is always ready for high-volume days.

Our Mixed Grey Mailing Bags Mega Bundle is the ultimate bulk solution for professional sellers, boutiques, and high-volume e-commerce businesses. With 600 premium mailers covering our three most essential sizes, you’ll be prepared for any order that comes your way.

What’s inside the 600-Bag Mega Bundle?

Bag Size	Quantity	Ideal For
A4 (9″ x 12″)	200 Bags	Small apparel, t-shirts, and accessories.
A3 (12″ x 16″)	200 Bags	Jeans, hoodies, and standard shoe boxes.
A2 (16″ x 21)	200 Bags	Bulky jackets, bedding, and multi-item bundles.

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Why Thousands of UK Sellers Choose Packaging365

Royal Mail & Evri Ready: All our bags and boxes are tested against UK courier dimensions to help you avoid unexpected surcharges.
Dispatched in 24 Hours: We know your customers are waiting. Orders placed before 2 PM are processed the same day for lightning-fast UK delivery.
Eco-Conscious Packaging: We prioritise 100% recyclable materials, helping your small business stay green without the high price tag.
No-Hassle Returns: Not the right size? No problem. We offer a 30-day money-back guarantee for all unused packaging
Free shipping on all orders over £50

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Bulk Mixed Mailing Bags: The Ultimate 600-Bag Mega Bundle

Stop the constant cycle of reordering and maximize your profit margins with the Packaging365 Mega Bundle. This professional-grade variety pack contains 600 Bulk Mixed Mailing Bags, specifically curated for high-volume Vinted Power Sellers, busy eBay shops, and growing e-commerce boutiques.

By choosing our Bulk Mixed Mailing Bags bundle, you ensure that no matter the order—from a single silk scarf to a heavy winter parka—you have the professional, secure packaging ready to go.

Mega Bundle Breakdown & Specifications

Bag Size	Quantity	Best Used For
A4 (9″ x 12″)	200 Bags	T-shirts, summer tops, leggings, children’s clothes, and books.
A3 (12″ x 16″)	200 Bags	Hoodies, jeans, dress shirts, and standard shoe boxes.
A2 (16″ x 21″)	200 Bags	Heavy coats, puffer jackets, bedding, and multi-item bundles.

Why Professionals Choose Our Bulk Mixed Mailing Bags

Maximum Privacy: Our 100% opaque grey film ensures total confidentiality for your customers’ orders.
Unrivaled Strength: Made from high-performance, co-extruded polyethylene. These bags are puncture-resistant and feature reinforced side seams for heavy loads.
Tamper-Evident Security: The extra-strong “Peel & Seal” adhesive strip creates a permanent bond. Once sealed, the only way in is to cut the bag.
Weatherproof Protection: Fully waterproof material keeps stock bone-dry during the unpredictable UK transit process.
Eco-Friendly Shipping: 100% recyclable, helping your brand meet modern sustainability standards.

Save Time and Reduce Shipping Costs

Using the correct size from our Bulk Mixed Mailing Bags variety pack doesn’t just look better; it saves you money. Avoid being overcharged by couriers for “dead air” in oversized bags. Pack efficiently, keep your parcel dimensions low, and enjoy the wholesale-level savings that only the Mega Bundle provides.

Additional information

Colour	Grey
Pack Size (Bags)	600

Mailing Bags Size Guide

Not sure which bag you need for your Vinted or eBay sales? Use our mailing bags size guide below to find the perfect fit for your items. All our bags are lightweight to help you stay within Royal Mail and Evri weight limits.

Quick Reference Chart

Bag Size (Inches)	Metric Size (mm)	Best For…	Royal Mail Format
9 x 12″	225 x 300 mm	T-Shirts, Leggings, Thin Summer Dresses, A4 Documents	Large Letter (if < 25 mm thick)
12 x 16″	300 x 400 mm	The “Workhorse”: Hoodies, Jeans, Coats, Small Shoe Boxes, Small Bundles	Small Parcel
16 x 21″	400 x 525 mm	Winter Coats, Boots, Larger Shoe Boxes, Multi-item “Bundles”	Small/Medium Parcel

🧥 Which bag for my item?

T-Shirts & Tops: Most single t-shirts fit perfectly in a 9×12″ bag. If the fabric is very thin, you can often keep this under 2.5cm thick to post as a Large Letter, saving you nearly £2.00 in postage!
Jeans & Trousers: Adult jeans are bulky. We recommend the 12×16″ bag. It allows room for the denim to be folded without putting stress on the seams.
Hoodies & Knitwear: For a standard adult hoodie, go for the 12×16″. If it’s an extra-thick “oversized” hoodie or a winter coat, move up to the 16×21″.
Vinted Bundles: If a buyer has bought 3–5 items, the 16×21″ is your best friend. It’s heavy-duty and large enough to keep everything together in one secure package.

📏 Top Packing Tips for Sellers

The “Air Squeeze”: Before sealing the bag, press down to remove excess air. This makes the parcel flatter and less likely to get caught in courier machinery.
The Fold Test: If your item is right on the edge of two sizes, go for the larger one. You can always fold the excess plastic over and tape it down, but you can’t stretch a bag that’s too small!
Check the Depth: Remember, Royal Mail “Large Letter” is about the thickness (25mm), not just the width. If your t-shirt is folded too “fat,” it will be charged as a Small Parcel.

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Bulk Mixed Mailing Bags Mega Bundle – 600 Bag Variety Pack (A4, A3, A2)