Environmentally friendly or eco-friendly products are products that are not harmful to the environment. These are products that will biodegrade either fully or to a great degree. Products made from natural fibres such as bamboo are a great source for this.
Environmentally sustainable products are products that continue to be reused or recycled without further depleting the world's natural resources. Stainless steel products are a great example as stainless steel is 100% recyclable and can be used over and over again.