The Ravenna 4 running shoe provides a little more cushion and a bit more flex. Profile sockliner sits underfoot and is made of BioMoGo for cushioning and forms a contoured support sensation. Adjustable saddle construction. Moisture-managing, breathable Element™ mesh upper with synthetic overlay materials and moisture-managing Element™ lining. Full-length BioMoGo earth-friendly midsole is blended with anatomical Brooks® DNA cushioning to create a springy return and custom comfort. Diagonal Rollbar (PDRB®), DRB™ Accel, full-length Cushsole, heel Caterpillar Crash Pad technology, and Omega flex grooves. Forefoot Stable Pod™ Configuration is a midsole/outsole design pattern intended to set the foot up for an efficient, balanced position from heel to toe. HPT Plus outsole with soft blown rubber in the forefoot provides responsiveness and flexibility. Wt. 10.8 oz.