Atelier Voisin spring leather boots 40

Purchased these in a high quality, innovative, handcrafted shoe' boutique in Paris: Atelier Voisin (https://atelier-voisin.com/) The sole, vamp and counter are leather, the shaft is a soft lined canvas like material. Size 40, would fit a 9.5. I only tried them inside the house as shown by the leather sole. Heel is 1.5 inch Ankle 5.6 inch Top 7.1 inch