Now your feet can help reduce your carbon footprints! Knit using REPREVE yarns made from recycled plastic bottles, these socks not only look and feel good, but theyâre good on the environment too. Eco friendly has never felt so soft. Cable knits and Nordic patterns mark the arrival of cooler weather yet these socks with their ultra soft yarns and reinforced toes are specifically designed to keep you warm and cozy all season long.