Sneakers, also known as trainers or athletic shoes, are primarily designed for sports or other forms of physical exercise, but have evolved to be worn in casual settings due to their comfort and stylish designs. They typically feature a flexible sole made of rubber or synthetic material and an upper part made of leather or synthetic materials. Sneakers can range from basic, affordable styles to high-end designer models, and are loved for their versatility, comfort, and wide range of designs and colors.