These premium sustainable Mack socks are not only stylish but also eco-friendly. Made with recycled polyester yarns derived from plastic bottles found in the ocean, these crew length socks are a great choice for the environmentally conscious individual. The fabric is carefully crafted by melting and weaving the polyester filaments, resulting in a comfortable and durable sock. Show off your Mack pride while making a positive impact on the planet with these socks.