Engineered Joint Support features: Graduated Compression --> Enhanced Blood Circulation 2-way Stretch web-panel provides Support to HIP flexors; HIP Joints; KNEES, Hamstrings, Quads, IT-bands 80% Coolmax Polyester, 20% Lycra Suitable for any intense exercise: Jogging, Trail Running, YOGA, Endurance sports Manufacturer rates Size M, however I would rate them smaller side of Medium, even Small. Hence listed as Medium Petite. **From a smoke-free, pet-free home.