Fit Guide S: 30-31, M: 32-33, L: 34-36, XL: 38-40 Benefits Built for high output. Made with our breathable AIRTEX fabric. 4-way stretch. Interior built-in liner complete with cell phone pocket for storage. Breathable mesh elastic band with integrated drawcord. Reflective strips for high vis in low vis conditions. Drawcord designed to sit internal or external for comfort / preference when training. 17.5"" outseam length falls above the knee. Scalloped hem so these won't get caught when you're in motion. Heat-transferred burgee on the left hem. bluesign® certified.  Details 90% recycled polyester /10% spandex Machine wash cold. Hang dry. Imported. The ultimate high-output short. With the Florence F1 Airtex Utility Short 2-in-1 Short, we've taken our best-selling F1 Airtex Utility Short and added a built-in liner, reflective strips so you can stay visible while running at night, and an updated breathable mesh waistband for better airflow / moisture management. Made from our breathable AIRTEX fabric, these were designed with running, training, yoga and climbing in mind.