Calvin Klein VULC FLATFORM LOW Womens Trainers Black/Bright White. These trainers feature a leather upper, mesh lining, and a rubber sole. They have a lace-up closure for a secure fit and are designed for comfort and breathability. The heel type is platform, with a round toe shape and a regular shoe width. The heel height is low, between 2.5-4.9cm, and the shoe shaft height is a low top. These are casual trainers, perfect for everyday wear or paired with elegant outfits. The premium quality material ensures they are comfortable to wear all day long. The upper is 100% leather. Founded in 1968, Calvin Klein is an American lifestyle brand known for its minimalist aesthetic.