Here are some facts from the manufacturer's website:
"Ecopots are 80% made from recycled plastic. Unlike the more common clay fibre pots, plastic pots have the advantage of being impact and splinter resistant, easy to move and extremely resistant to UV light and frost. On top of this, there is another strong argument for using recycled pots: our oceans are slowly but surely becoming a giant plastic soup of discarded plastic bags, fishing nets and PET bottles. Ecopots uses recycled plastics as the material for all our pots and, combined with materials such as recycled natural stone, they give our pots a unique look and feel... At Ecopots we only want to produce high quality pots. To achieve this, we have teamed up with Centexbel, a university plastics laboratory, to develop truly sustainable plastics. We asked Bureau Veritas to test our products. Under the supervision of the Belgian Quality Association, all Ecopots are validated for recycled content and meet the quality standards set by PolyCert Europe. Every year, our certifications are evaluated and renewed to guarantee the best quality".