The Reebok arm sleeves with stretch performance are designed for targeted and comfortable compression while walking, jogging, and running. The pair of sleeves come in four size options for a tailored fit. The arm sleeve features internal silicone strips to help stop the sleeves from slipping so skin is not irritated while moving arms during focused marathons. The sleeves can stretch with movement yet stay in place without shifting. Our arm compression sleeve has targeted compression for optimal comfort and support during long training sessions to help you feel energized or help with sore muscles. The woven structure is made to allow airflow to help you stay cool outside while offering much-needed support. Feel comfortable with extreme movements for cooler and dryer workouts. The arm compression sleeves for men and women come in four size options. Small is 7.9–9.8 inches or 20–25 cm. Medium is 9.8–11.8 inches or 25-30 cm. Large is 11.8–13.8 inches or 30-35 cm. X-Large is 13.8–15.7 inches or 35–40 cm.