At first glance, the adidas Ultra Boost 20 Core Black Silver Metallic might look like any other Ultra Boost sneaker. But this particular model, which was unveiled in 2020 to celebrate the Paralympic Games, has several unique features that set it apart from its counterparts. For starters, this Ultra Boost's black Primeknit upper is constructed out of Parley Ocean Plastic to make it more eco-friendly than the average Ultra Boost. It also has a striking Fitcounter heel counter that is done up in Silver Metallic to make it stand out against its black backdrop. But our experts argue that the most interesting part about this Ultra Boost is that it boasts Braille branding on the tongue that plays up the Paralympic Games connection a bit more while adding another design element to the mix. The adidas Ultra Boost 20 Core Black Silver Metallic was released on August 1, 2020, when it retailed for $180.