The Naked Maui's hemp fiber and whisper-weight construction make wearing it the next best thing to going au-natural. The shoe's breathable hemp upper and slide-on styling are ultra comfortable; polyester air mesh lining circulates air flow for an unstuffy feel. Recycled (20%) EVA footbed and midsole are supportive underfoot. Patagonia Air Cushion Plus is highly shock-absorbent. Maui high-abrasion EVA outsole provides the ultimate lightweight platform. Slip-lasted construction. materials: Hemp upper. Rubber sole. measurements: Heel measures approximately 0.75" Platform measures approximately .5" item details: 20% recycled EVA footbed. Patagonia Air Cushion Plus. 20% recycled EVA midsole. country of origin: China.