Men's Size 7.5, and women's size 9.5. Using ventilation technology, these sneakers breathe freely. Upper Material: Leather Heel Height: Low(1-3 CM) Outsole Material: Rubber Condition: preowned, please see pics, no flaws Lining Material: Cloth Closed pattern: Lace-Up Color: Blue, Black, Red, White Function: Shock-absorbsent French made shoe. French sizing indicated on label. OPP stands for O'Papillon, the renowned designer and its collaborators in the vibrant Parisian fashion scene. OPP adeptly blends simplicity and style, integrating leather with copper and silver metals to create pieces that embody strength, sophistication, and allure. From rugged masculinity to delicate elegance, OPP leaves a lasting impression. Renowned for its visually striking identity and conceptual depth, OPP infuses each product with rich philosophical meaning. Every creation reflects the extraordinary taste of its individual designers, embodying a blend of tradition, rebellion, and self-expression.