Nucleo fits small. It is recommended to choose a size up Sneaker boot in black with recycled TPU bubbles and algae EVA sole . Upper: 50% Recycled TPU + 30% PL + 20% PU Sole: 60% EVA + 30% Rubber + 10% Recycled TPU. 100% Vegan Made in China Please note that due to Brexit, additional charges will be applied for orders shipped to the UK. The amount varies based on the price of the item, up to 30% of the total value. For styles Made in China, shipped to the US, customs may be +125% of the value of the shoe. The amount for orders shipped to China varies based on the price of the item, up to 20% of the total value.