Eco-friendly EVA foam sole, making it Cloud-like comfort in every step.1.7 inch - 4.5cm thick sole that provides ultimate support and comfort to your feet.The enhanced arch support can help alleviate the symptoms of arch and heel pain caused by plantar fasciitis.Upper windows provides your foot with extra air flow for superior breathability.ATTENTION:The EVA material may shrink and deform at high temperatures, please do not expose them to the sun for a long time.