The Brooks Glycerin 12 is a neutral daily trainer that is lighter than expected and built around the concept of delivering an ultra-cushioned running experience. The shoe offers runners a solid daily trainer that is designed to be able to handle the demands of higher mileage while providing for a stable and comfortable ride.Weight: Heavy | 8.7 oz New ultra-cushioned Super BioMoGo DNA material in midsoleDesign changes focused on increasing cushioning and decreasing weightIdeal Pressure Zones to enhance the uniform distribution of pressure during foot strikeHeel rounded to provide more efficient strideHeel-To-Toe-Drop: High | 10.4 mmHeel Height: High | 33.0 mmHeel Cushioning: Very SoftForefoot Height: Moderate | 22.6 mmForefoot Cushioning: Very SoftFlexibility: StiffStability Features: MoreEnergy Return: ModerateGood conditionSize 8.51503