Eco-friendly binoculars

I've been using eco-friendly products for the past three years. I am doing this because I care about mother nature. Last week, I decided to get one binocular. I was wondering if there was any eco-friendly binocular. After a brief search in the Internet, I found out that the Nikon Ecobins Binocular is the most eco-friendly binocular on the planet. It must be noted that most of the eco-friendly products are costly, but Nikon ecobins have almost the same price as other normal binoculars. I have ordered it from http://www.nikonecobins.com/. No environmentally harmful chemicals are used to manufacture these binoculars. These binoculars also use eco-friendly lens.