The term 'PUMP FEATURES' can be summarized by the word 'SOLES, ' which is a five-letter word. SOLES are the bottom of a shoe, and they are often made of rubber or other materials. They provide cushioning and support for the foot, as well as traction on various surfaces. Pump features refer to the design elements of a shoe, such as the shape of the sole, the material used, and the tread pattern.