Material: Spandex + NylonSIZE CHART:S: suitable for shoe EURO size 35-36;M:suitable for shoe EURO size 37-39;L:suitable for shoe EURO size 40-45;XL:suitable for shoe EURO size 45-48;ANKLE SUPPORT TECHNOLOGY Made of breathable high-elastic air knit fabric, It will apply comfortable and full range compression to provide even pressure around your ankle joint. Three-dimensional structure of woven, High-precision 3D cutting technology of knitting. These special functional elements strengthen ankle support and maintain joint stability. It effectively disperses pressure, keeping your ankle warm, lubricating your joints. It's the BEST CHOICE for sport protection and pain recovery.EFFECTIVE RELIEF & SUPPORT Wrap around your ankle to enhance the stability of joint and relax tendons, prevent joint strain. Target compression and improve blood circulation, professional ankle sleeves will relief pains of achilles tendonitis, plantar fasciitis, joint pain, swelling and heel spurs, and other ankle or foot pain. Medical grade plantar fasciitis socks with foot arch support will significantly relieve pain and speed up injury recovery. It is Perfect for Pain Recovery or Workout.