Summer Hollow Genuine Leather Women's Casual Flat ShoesDesigned with breathability and durability in mind, these shoes come with a natural leather insole and pigskin inner lining, ensuring maximum comfort throughout the day. The sole is made of beef tendon with viscose technology, offering superior traction and longevity. pattern: plain Upper material: two layers of cowhide (except cow suede) Insole material: natural leather Inner material: pigskin Sole material: beef tendon Sole technology: viscose shoes