The adidas Ultra Boost 21 Parley Non-Dyed FW is a product of a partnership between adidas and Parley, aiming to introduce environmentally conscious footwear crafted from recycled materials, with a focus on constructing a high-performance adidas Ultra Boost 21.

The FW adidas Ultra Boost 21 Parley sneaker departs from its regular knit uppers, instead featuring a "Non-Dyed" neutral-toned upper crafted from stretchy textile mesh. The sneaker showcases both adidas and Parley branding through white woven tags on the tongue and heel. Tonal nylon-like tabs and subtle zigzag stitches maintain a clean and simplistic appearance. The shoe sits atop a full-length responsive Boost midsole, while its underfoot support is provided by a black Continental rubber outsole with blue accents and a translucent black heel.

Something about this sneaker that sets it apart is the use of upcycled plastic waste collected from beaches and coastal communities before drifting to sea to make the textile upper. The adidas Ultra Boost 21 Parley Non-Dyed FW was released on June 6th, 2021. Upon its debut, it retailed at $200.