Thread : 100% cotton Sole : EVA - height 1,5cm/2,5cm Made in PRC Those trekky are handmade and handcrafted. All upper parts of the trekky models are made from recycled plastic bottles - REPREVE label. Measurements : Length of the sole 36/23,5cm - 37/24,5cm - 38/25cm - 39/25,5cm - 40/26,5cm - 41/27cm - 42/27,5cm