Brooks Glycerin 21 Running Shoes. Very Good Used Condition, only used for limited running miles. Great shoe with great cushion. Smoke free, pet free home; open to offers! Step into comfort and style with Brooks athletic shoes, featuring a vibrant purple and white color scheme. Designed for performance, these shoes boast a cushioned midsole for enhanced support and a breathable mesh upper for optimal airflow. Perfect for any athletic endeavor, they combine functionality with a modern aesthetic.