The original, patented returnable Clip-Lok transport box consists of plywood panels held together with our original, detachable spring steel clips.

The flat-packed transport box is easily assembled without use of any tools, and once assembled, the wooden crate is strong enough to be stacked up to 7 high. The reusable transport box can be flat-packed after use and will then take up close to 80% less space, thus minimising return costs.

Clip-Lok returnable transport boxes save time and money, while contributing to a greener environment.


About The Transport Box

Clip-Lok SimPak transport boxes are designed and built to optimise the supply chain cost and secure the product inside. By the help of our 3D design technology we design a shipping box that meets all specified requirements while taking into account product, packaging process at both ends, handling, transportation, and storage. The strength and flexibility of the Clip-Lok box and the customised dunnage ensure that items inside are transported safely and at the lowest possible cost.

Since the introduction of the Clip-Lok reusable and collapsible wooden shipping crates, hundreds of thousands of returnable units have been produced and shipped all over the world. The customised packaging design and the tailor-made dunnage of transport boxes serves to optimise supply chain cost, since the goods in the box are packed more effectively and the box can be reused multiple times, up to 400 circles. Although, the versatility and durability of the box have exceeded many of our customer expectations, meanwhile the wooden shipping box is a sustainable packaging solution for the supply chain.



By optimising packaging helps to save space, reduced space in supply chain helps to optimise logistics cost. At Clip-Lok SimPak we know from experience that our customers can pack more efficiently if the dunnage is well designed and meets their transportation demands and specifications. Our engineers will work closely with customer and products to fulfil the need for safe and rational packaging. With the 3D design technology and our development team we design the reusable transport box and dunnage that will transport products safely through the supply chain.


No matter whether you choose a returnable box, a patented 2P box or an expendable box, the dunnage is important to ensure cost-effective packaging with maximum protection and stabilisation of your products all the way through the supply chain. We constantly develop creative additions to our range of designs and materials; and we construct the customised dunnage from a wide range of materials. When you choose well-designed dunnage to protect your items, you also optimise space usage.


Heavy or delicate products that can be scratched or break need to be securely packed to ensure safe delivery. We offer you dunnage based on your requirements. For you to feel confident that our boxes meet your exact requirements, we can assist in setting up performance testing such as weather-resistance, vibration, drop and pressure tests, etc.



Clip-Lok uses various kinds of materials and finishes in order to meet your demands. Our reusable collapsible plywood boxes are usually made of high quality plywood, which is strong and flexible. The original spring steel clips are equally strong and flexible and also easy to fit or remove.

  • Highest quality spring steel clips, 35 or 50 mm wide
  • Plywood in 9 – 36 mm, FSC or PEFC certified
  • Smooth and clean surface
  • Low moisture absorption
  • Strong and flexible
  • Plywood with film finish in 9 – 36 mm, FSC or PEFC certified


Clip-Lok clips are made to exact specifications to ensure that they can be used repeatedly over many years, securing the integrity of the strength of the reusable Clip-Lok box.

The Clip-Lok clip is made of the highest quality spring steel with 100% elastic behavior and a tensile strength across the clips of up to 11,000 kg depending on the type of clip. The clips are surface protected with a high quality coating.

In accordance with ASTM B117, the clips can withstand a salt spray test for more than 250 hours. In addition, they have been tested and approved for extreme weather conditions ranging from arctic cold to jungle heat.


Once unpacked, the containers can be collapsed and stored flat. All components of a collapsed returnable Clip-Lok box are contained in one unit. The original reusable box can be assembled or dismantled by only one person in less than three minutes. The height of a collapsed box, including a pallet, is 170-220 mm depending on specifications. The compact size reduces space and allows more boxes to be returned in a single shipment, which reduces logistics costs. The collapsible boxes take up a minimum of storage space.


No matter whether you need a two- or four-way pallet, Clip-Lok will design it to match your needs. Our pallet bases are produced in plywood as they are an integrated part of the box.

Quality control


To ensure the quality of our expendable box, we constantly test it to fulfil our customers´ requirements. Clip-Lok expendable boxes are high quality and immensely strong and stable. These boxes and all clips have been tested exhaustively by official test institutes around the world and in every case they have met the most stringent of standards.


To make sure that your products are transported safely through the supply chain, the returnable Clip-Lok containers have been tested successfully for:

  • Pressure up to15 tonnes for a 12mm case
  • Containing up to 1,000 litres
  • Stacking up to 7 high when loaded
  • Vibration
  • Drop testing
  • Weather resistance
  • Impact and pressure
  • Our boxes are compliant with ISPM 15 regulations.

Over the years, Clip-Lok has provided uncompromising packaging solutions for several business areas such as military, automotive and aeronautical industries all over the world. We have obtained many approvals, e.g.:

  • ISO 9000 or equivalent awarded in a number of countries
  • United Nations approval for the transport of dangerous/hazardous goods
  • Armed Forces accreditation in a number of countries
  • Our vendors are certified according to ISO 14001
  • ISPM15 heat treatmen
  • Winner of the World Star Global Packaging Awards 2016
  • Clip-Lok SimPak has officially been certified with ISO 14001 and ISO 9001 by Intertek

The process


To ensure that our box fulfils your exact requirements, we will work with you to establish your specific packaging and transport needs. We will consider all possible issues and new opportunities to deliver a successful and integrated packaging solution. We are fully focused on the purpose of the box, its cost-effectiveness, and on easy handling in the supply chain.


Once we have established your packaging needs, our dedicated engineers will design a fully integrated packaging solution that will meet all your requirements for a sustainable and cost-effective reusable packaging system. With the help of our advanced 3D design technology we are able to swiftly provide you with a prototype which can be tested for your approval.


Not only do you have to satisfy your own demands for safe and cost-effective packaging; you also have to make sure that your customers feel confident about the solution. Our worldwide customer service is prepared to handle any request. We know from our many years of experience that the whole supply chain is satisfied with the Clip-Lok reusable packaging system. It is easy to handle, saves time and reduces costs.


No matter whether you choose to transport your goods by air, sea or land, we are able to provide you with packaging solutions that fit the exact requirements of your cargo in order to optimize transportation of your goods.

Create your box


Additional Options

Clip-Lok SimPak can adapt RFID tags or GPS tracking device to your boxes to have the most modern tracking system and product data available on the market.

With over 30 years of packaging experience, we have thousands of different transport boxes in one-way and returnable solutions available that are ready to be shipped. We can solve all your packaging problems and have a perfect solution for you, and its FREE to test!


We guarantee our product against faulty workmanship from delivery of an order;
any part which fails due to faulty material or faulty fabrication will be replaced free of charge.


All our customers are provided with a high standard of service. We will do our best to serve you and meet your needs not only in the process, but also after delivery of our reusable, collapsible Clip-Lok Boxes.

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