The Nike Alpha Varsity Pants are built to play tough. Stretch fabric has a tight fit with pockets at the knees and thighs for protective padding. Mesh on the sides helps keep players cool on the field. Stretch fabric helps you move freely. Mesh on the sides provides breathability. Tight fit helps keep padding close to the body. Pockets at the knees and thighs give you space for protective padding. 86% nylon 14% elastane Let me know if you have any questions.