The next time you visit the Google Store, you will notice small icons beside most items they sell. These icons represent why that product can be considered "green".
The Google Store is going green. We only have one Earth and we want to do our best to take care of her, so we've worked hard to make our store more eco-friendly. From organic cotton T-shirts to pencils made of recycled blue jeans, you'll find that most (though not all) Google products are now made of recycled material or other stuff that goes easy on our planet. And where we used to use plastic polybagging, now we use more environmentally sound recycled wraps and stickers when shipping your order.
Here are the icons they use to tag items as described on their "Green Initiative" page: