100 percent Recycled mesh top layer Lace up closure for secure fit Sustainable insole containing 20 percent recycled foam and 5 percent bio based material Midsole made with Better Foam lightweight eco foam materials for reduced carbon footprint and comfortable ride Zoned rubber outsole Built With A Focus On Sustainability But Sticking With Puma''s Inimitable Style, These Shoes Are Sure To Become Your Go To Footwear For Your Runs. They Feature A Recycled Knit Upper And A 3D Molded Heel For Optimum Style And Comfort. Better Foam, Found In The Midsole, Is Created With 50 Percent Bio Based Sugarcane Compression Molded Ethylene Vinyl Acetate. But More Than Being Just Light On The Environment, They''ll Help You Be Light On Your Feet, Too. It''s Time To Be Better.