Circular thinking is about circular economics and is basically concerns keeping materials and products in orbit with the highest possible value for as long as possible. That is, to recycle resources or even better to repair or upgrade products that would otherwise wind up as waste. You can read more about circular economics here. When it comes to maintenance of our products, we have made it easy to contact our support department to ensure that your Contour product will last for many years. For the same reason, we do not make new models every year, but stick to those products that have proven to meet the needs of our customers.