Because it works
When deciding which materials to use in our collections, we look at the following metrics: Water usage, energy consumption, ecological footprint, toxicity of chemicals, eutrophication, CO2 emissions and end-of-life. All of our data points come from reliable third party data. We try our best to not just show a number but to also explain how someone came to that conclusion. We study all our materials in and out and love to answer questions about why we chose to use them.