Design: Structured upper for breathability and a lightweight fit TPU plate for a propulsive feeling Adjustable lace closure for a secure fit In-Shoe Comfort: FuelCell midsole foam with approximately 3% bio-based content delivers a propulsive feel to help drive you forward Additional Details: Bio-based content is made from renewable resources to help reduce carbon footprint Weight: 280 g / 9.9 oz 6 mm drop; due to variances created during the development and manufacturing processes, all references to 6 mm drop are approximate