1. A circular product remains useful for a long time.
Good design adapts to changing requirements to ensure prolonged usage. This longevity is not only about durability, but also about ensuring that a product can remain useful throughout its lifespan. People’s lives and situations change constantly; product design needs to accept this reality by embracing flexibility and modularity as much as possible.
2. A circular product can be repaired.
Products are made from different parts and materials that wear out at different speeds. Designers need to understand this variability and design around it, such that all components can be repaired or replaced by either the user or local repair shops. Signs of wear are inevitable, and designers should select materials whose ageing does not reduce their value.
3. A circular product is designed as a system.
All products are imperfect and contain elements that can be further developed and refined. Design should accept and work with this imperfection, creating products in which individual elements can be improved and reincorporated, extending their lifespan on the market. Good design is essentially pragmatic – it recognises its limits and remains open to improvement.
4. A circular product is produced from renewable or recyclable materials.
A product’s end of life is as important as its usage, and materials should be selected with respect to the material cycles of which they are a part. Synthetic materials should only be used if products are capable of easy disassembly and covered by existing recycling systems. Natural materials must be harvested sustainably and processed such that they remain compostable.
5. A circular product uses as little energy as possible over its entire lifespan.
Energy consumption should be limited, with this applied over a product’s entire lifetime, not solely during its manufacture. A high energy usage during production may be justified by a longer lifespan, or else by future savings on recycling. Aluminium is energy intensive to produce, for instance, but subsequently efficient to recycle and retain within the material cycle.
6. A circular product can be transported efficiently.
A product’s distribution should be factored into the design process. Designing products to occupy as little space as possible when being shipped can improve the environmental impact of their transport; reduce packaging; and ultimately lower the overall cost for the customer. A product’s initial distribution is as important a part of its lifespan as its usage or afterlife.
7. A circular product improves upon what came before.
All manufacture comes with an environmental cost, so any product’s existence must be justified by more than circularity alone. A good product offers a tangible advantage to the user, and represents something that they can become meaningfully attached to and want to preserve. Circularity is not puritanical – to fulfil its aims, it must also be innovative, elegant and joyful.
8. A circular product can be used by many.
Long-lasting products can be used by multiple people, particularly in the case of designs that are only required for a short period of time. An object such as a child’s chair should be rented rather than purchased, and these considerations should affect the business model behind design. Responsible cycles of rental, repair and reuse can benefit both the user and seller.
9. A circular product considers those who manufacture, maintain and recycle it.
A design is only sustainable if its production, maintenance and recycling treat people equitably. Good products are produced in countries that respect human rights, and in factories and workshops that pay and treat workers fairly. Designers should research and make their supply chains transparent, and give consideration to what their designs ask of those producing them.
10. A circular product is as little product as necessary.
Not every design needs to be a product. Physical objects are vehicles for a function or service, but there are other ways of delivering these. Digital platforms, graphic design and interface design all have lighter footprints than objects, but can often meet the same needs. Good product design always considers whether there are ways to render the material object superfluous.