If your products are small and lightweight, you may have considered using courier bags to post them. This can be a cost-effective way to deliver your products, especially if you choose the right size and type of bag.
In this article, we explain the sizing of NZ Post courier bags so that you can decide which is right for your business. We also explain which types of products are suited to courier bags, and when to opt for a cardboard carton (box) instead.
What is a courier bag?
Courier bags are flexible bags used to ship products safely and securely. During delivery, they protect the product from dust, dirt, and water. Some courier bags come with extra padding to protect fragile products, such as jewellery and electronics.
NZ Post prepaid bags
If you use NZ Post to deliver your products, you can use their range of prepaid courier bags. They are made from 80% recycled plastic and are 100% recyclable through your local soft-plastic recycling scheme. The size options are as follows:
Size 1 courier bag
The smallest prepaid bag from NZ Post measures 135mm by 240mm. This can fit small items such as jewellery or tech parts.
Size 2 courier bag
The next option is the 190mm by 280mm standard prepaid bag. This is the same as the size 1, though slightly larger. This size is often used to package clothing items.
Size 2 courier bubble bag
The size 2 bubble bag comes with additional built-in protection to keep fragile items safe during delivery. This is suitable for small electronics and lightweight items that are prone to breakage. The dimensions of this bag are 210mm by 280mm.
Size 3 courier bag
The size 3 bag measures 255mm by 325mm and it is suitable for packaging documents, clothing, and certain electronics.
Size 4 courier bag
The size 4 prepaid bag is 280mm by 380mm. This is suitable for packaging lightweight items like clothing, jewellery, and electronics.
Size 4 bubble bag
Slightly larger than the regular size 4 bag, the bubble bag measures 300mm by 380mm. The bubble plastic provides protection for fragile items such as glassware and mobile phones.
Size 6 courier bag
The largest of the sizes, size 6 bags are 400mm by 440mm. They are suitable for packaging large items such as bulky clothes and electronics.
What to post in a courier bag
The general size and capacity of courier bags may vary so it's always a good idea to check the product specifications before purchasing. If your products are irregular in shape, heavy, or too large for courier bags, a box or carton may be a better choice.
To determine if a courier bag is suitable, ensure the product dimensions are smaller than the bag dimensions. You will also need to account for the thickness of the product as larger items may require the bag to have more give.
Standard courier bags
Standard courier bags are used for shipping lightweight items. For example:
- Wall posters
- Garments
- Mobile phone case
- Jewellery
Bubble courier bags
Bubble courier bags are made with bubble plastic to provide additional cushioning. They are the best option for premium products such as:
- Electronic items
- Glassware and ceramics
- Mobile phones
Bubble bags can help to protect the products from damage but you may be wiser to opt for a carton with loose-fill protectives instead. You can find the full NZ Post sending standards here.
Does Primepac sell prepaid NZ Post bags?
The Primepac team have been supplying New Zealand with packaging solutions for decades. Our range covers all kinds of office supplies and packaging products, from tapes and labels to pallet wraps and protectives.
Our mailers are some of our most popular products. Our post bags are not prepaid but we do offer several options to choose from, including sustainable alternatives.
Primepac courier bags
We have courier bags for a range of products and purposes. Below are a few of our most popular examples:
Maxi-pack Courier Mailers
These mailers are perfect for products that need extra protection during delivery. The co-extruded outer is tough and puncture resistant and the cushioning keeps your products safe. To make your packaging process more efficient, the mailer is easy to write on self-seal. The sizes range from 150mm by 220mm to 360mm by 470mm.
See Maxi-pack Courier Mailers >>
Self-adhesive Courier Mailers
These mailers are strong, puncture-resistant plastic envelopes with a self-adhesive closure flap. The outer surface is easy to write on and the silver lining provides additional document security. The sizes range from 190mm by 260mm to 420mm by 450mm.
See Self-Adhesive Courier Mailers >>
Padded Kraft Mailers
These mailers are made with two layers of brown honeycomb paper and make an excellent all-purpose option for product packaging. What’s more, your customers will appreciate that they are easy to recycle in any household recycling bin. The sizes range from 255mm by 360mm to 405mm by 510mm.
Paper Courier Bags
These paper bags are made from recycled, natural FSC-certified paper and are recyclable and compostable. With added thickness, your products will be well-protected during delivery. The sizes range from 180mm by 280mm to 280mm by 380mm.
Compostable courier bags
These bags are made with plants and non-toxic inks. They are compostable in both domestic and commercial conditions, making them easier for customers to dispose of responsibly. Additionally, the matte black design is sleek and striking, ideal for leaving a strong impression on your customers.
The sizes range from 255mm by 325mm to 515mm by 750mm.
See Black Compostable Courier Bags ››
Want to know more about our packaging solutions? Browse our online range or download our e-commerce catalogue. You’ll find all the products and accessories you need to streamline your operations, improve your customer experience, and raise your revenue.
