Powerstep PF Sleeve Compression Sock 100% Nylon/Spandex Imported Fabric sole PLANTAR FASCIITIS SUPPORT SLEEVE: The foot sleeve provides a supportive compression to reduce symptoms of Plantar Fasciitis, as well as arch and heel pain. COMPRESSION SUPPORT SOCK: The slight 20-30 mm Hg compression throughout the sock helps alleviate foot pain. THIN AND BREATHABLE: The lightweight sleeve sock is perfect for wear under regular socks and with shoes - allowing for a comfortable wear. RIBBED BANDS FOR ADDED SUPPORT: Along the Achilles and arch, ribbed bands provide an added support to alleviate aches and pains. COMFORTABLE FIT: Comfortable bands hold the compression sleeve in place at the ankle and the toes.