Neo 2.0 is their lightest ever safety boot, featuring a Nano Gravity safety cap (carbon nanofiber). Lightweight "Neo tech" Internal anti debris gaiter. REPREVE linings made from post consumer plastic bottles. Nano Gravity safety cap (carbon Nanofiber 50% lighter than steel and 40% lighter than composite caps). Lightweight and durable microfiber upper. Double pull loops for easy pull on. P E A FO HRO SRC S1 EN ISO 20345:2011.