New Balance 577 - Women's The New Balance 577 is a durable and cushioned toning shoe designed for the moderate-paced walker. Leather upper provides natural comfort, durability and breathability. Reflective detail. Polyurethane midsole offers supportive and durable comfort. ABZORB® in the heel adds exceptional shock absorption. Solid rubber outsole is long-wearing and durable. Walking Strike Path® stabilizes the foot through the walking gait cycle. Wt. 10.6 oz.