ESTER slipper in blue. EVA sole, nubuck leather upper, and leather insole. HANDCRAFTED: Our footwear is made unique by the unmistakable Italian design, the skilled Spanish craftsmanship, and the sustainable, high-quality materials. 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, 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.