Flexible refers to the capability to adjust or bend easily. In the case of shoes, flexible refers to a type of shoe that generally features soft uppers and lightweight, bendable outsoles. Flexible footwear is designed to provide exceptional comfort when worn.
About Low Heel:
Low heel are shoes which raise the heel of the wearer between 2/4" to 1 1/4" higher than the toes and provide moderate elevation. Low heel shoes come in a variety of styles, including sandals, loafers, mary janes, oxfords and boots. Low heel shoes are generally considered comfortable footwear, mostly due to their flexible, lightweight soles and low heels, which provide stability.