The Parley x adidas UltraBoost 21 ‘Non Dyed Black’ combines comfortable cushioning with eco-friendly construction. Its light-colored upper is made from a combination of textile, mesh, and ripstop materials, which are partially made from upcycled plastic waste collected from beaches and coastal areas. This process prevents the plastic from polluting the ocean. The shoe features a secure fit with its dynamic rope lacing system and rearfoot stability thanks to its molded heel counter. To showcase the collaboration, both adidas and Parley branding can be found on woven tags attached to the sneaker's tongue and heel. The sneaker also boasts a minimalist design and is built on a full-length Boost midsole for ultimate comfort. Additionally, the sneaker's underfoot is supported by a Continental rubber outsole for excellent traction.