The outsole of the Summer is made out of TPR which is Thermoplastic Rubber Sole

Activewear

Vibram® EcoStep Recycle EVO outsole with 30% regrind recycled rubber

Find the perfect balance between the sophisticated style of a loafer and the wearable ease of a mule

BROOKS HYPERION MAX 4 WOMEN'S COLOR_PATTERNED The outsole of the SummerTrain fast in the Hyperion Max 4 our lightweight men's race training shoe. Highstack cushioning helps soften impact, while the propulsive nylon plate helps you fly. Best for Fast workouts, Training runs, Long runs Cushion Responsive Light and springy cushioning that propels you forward. Support Max support Assisted transition from landing to toe off and added cushion underfoot Midsole drop 6mm Weight 10. 1oz 286. 3g Features Breathable and secure