NITRO foam cushioning puts comfort under every step you take in this running shoe designed with a breathable mesh upper. Lace-up style Removable insole NITRO FOAM cushioning puts lightweight, responsive comfort under every step Textile upper/synthetic lining and sole Imported Puma has received the Fair Labor Association accreditation, which signifies that the company has effective systems and procedures in place to successfully uphold fair labor standards throughout its supply chains, including strategies and tools to address and improve working conditions