Information taken from the VIVAIA website: Elevate your shoe game with the VIVAIA Pointed-Toe Kitten Heels. These chic and modern eco-friendly shoes feature a sleek pointed-toe design, heart shaped vamp, and a delicate kitten heel that adds sophistication to any outfit. With pressure-relief insoles and 0 break-in wearing experience, these kitten heels offer all-day comfort, making them the perfect choice for any occasion, whether it's a formal event or a casual outing. The minimalist design exudes sophistication without being too flashy, making them a versatile addition to any wardrobe. Pointed-Toe Kitten Heels 45mm/1.96"heel height Knit upper made from plastic bottles Natural Artemisia Argy + PU foam insole, with heel rebound, arch, and forefoot support Heel Patch for added comfort Rubber Outsole Notes: Worn once, some wear on the treads, see pictures.