On Women's Cloudboom Max Race shoes 25 Ah Hybrid battery or

25 Ah Hybrid battery or AAA batteries for backup

Strategically placed compression bands support muscles and promote circulation

ventilated fit

made from our high performance Vapourlite fabric

On Women's Cloudboom Max Race shoes 25 Ah Hybrid battery orKey features Weight: 250g Double layer of Helion HF hyper foam for energy and comfort Glass fiber infused Speedboard for efficiency and support Impact protection and high energy return Ultralight and breathable upper Heel cushioning for secure comfort over long distances Supportive upper molds and adjusts to your foot's movements Rubber outsole for grip on the road Engineered for finishing times of around four hours or more