✓ SATISFACTION GUARANTEE: Risk-Free! Any Imperfection are guarantee for Full Refund or Exchanged. ✓ HOW TO SELECT SIZE: When selecting a size, measure the circumference of the thickest part of the calf. The right size will make you more comfortable. If you prefer a stronger compression, you can choose a size smaller than usual. If you prefer a lower compression, you can choose a size larger than usual. ✓ MATERIAL: Novetec calf compression sleeves are made of 90% polyester and 10% spandex. More soft and breathable. At the same time, the weight of the calf compression sleeve is very light, so when you wear them, you will not feel burdensome, making you more comfortable during sports. ✓ SUIT FOR SPROTS: The calf compression sleeves can accelerate the blood flow and recover fatigue during sports. The calf compression sleeves are suitable for running, walking, hiking, cycling, gym, volleyball, basketball, football and workout. It is also very suitable for pregnant women, the elderly and people who need to stand for a long time, such as nurses, teachers, construction workers and aviation personnel. ✓ PAIN RELIEF: The calf compression sleeves provide muscle support, fix the calf muscles, and reduce muscle soreness. The calf compression sleeves provide 20-30mmHg pressure to help relieve shin splints, varicose veins, leg cramps, and calf muscle soreness.