What's the next big thing on the horizon for theĀ adidas Ultra Boost Uncaged? A collaborative version of the shoe with an environmentally friendly upper. Shown here are leaked images of an upcoming adidas Ultra Boost Uncaged designed with Parley for the Oceans, an organization that seeks to eliminate threats to Earth's oceans.

The sneaker reworks the traditional heel-area support piece and uses what appears to be recycled plastic salvaged from the ocean there. The pulltab on back reads "Parley," confirming this shoe's collab status.

Adidas has long hinted at a retail release to come from its projects with Parley, which have been unavailable to the public for the most part. The brand mentioned in a June press release that one of its "top footwear franchises" would use recycled plastic in the second half of 2016 for a commercial release, a description that certainly fits this shoe.

That being said, there's no word on when this Parley x adidas Ultra Boost Uncaged will be available at retail.