Vita Over the knee leather boots with mid block heel. Following trends with classic styles, these gorgeous over the knee boots include a mid block heel and can be worn from day through to night. Partner with skinny jeans or tights and oversized with blazer for a smart chic style. Calf measure 16 cm. Boot measurements are taken from the widest part of the calf and based on a size 37. And buy this Vita - Navy Was £199.95 Now £119.95.