Eco-bedding company, Keetsa, scores each one of their products with a Keetsa Quotient, or a score of how environmentally-friendly they are. Take their Tea Leaf Classic mattress for instance. It scores a 67.08 out of 100 -- compare that to their Tea Leaf Supreme that has a 90.38! It seems that there is a trade off, however, as the less eco-conscience of the two is marketed as "Our Softest Bed". The beds are made of recycled steel, scrap memory foam bits, bamboo fabrics, unbleached natural cotton, and odor-controlling silver and green tea.