This Oceanworks Guaranteed PET (Polyethylene Terephthalate) Ocean Plastic is sourced from Central America and comes in the form of clear flakes. It is guaranteed to have been harvested from an oceanbound location, one of the five types of locations where ocean plastic is collected worldwide, which means that it is material collected from communities with no waste management within 50 km of the shore line. Many small islands of developing countries fall into this category. This is in accordance with standards set by renowned marine debris expert, Jenna Jambeck.