ESTER slipper in blue color. EVA sole, nubuck leather upper, and leather insole. ARTISANAL CRAFTSMANSHIP: It is the unmistakable Italian design, the skillful Spanish craftsmanship, and the sustainable, high-quality materials that make our footwear unique. Style, taste, and meticulous craftsmanship give life to extraordinarily comfortable and versatile shoes. EVA SOLE: The sole is made of EVA, a material similar to rubber but much lighter, more flexible, cushioning, elastic, and durable. EVA soles absorb shocks and reduce the impact of feet on the ground. INSOLE: Our insole is designed considering the anatomical features of the foot's arch and made with lightweight and cushioning materials. It adapts to the shape of the foot without compressing it, supporting the natural gait and reducing fatigue. Made in Spain.