The OS1-32343B OS1st Unisex FS6 Performance Foot Sleeves effectively relieve plantar fasciitis, chronic arch and heel pain, and foot swelling. Compression Zone Technology® provides orthopedic support to the foot and Achilles tendon. The graduated compression improves circulation and reduces swelling. It's a comfortable and moisture-wicking sleeve that can be worn under socks and inside shoes for resting therapy or overnight for morning pain relief. Worn as a pair, they function as a strengthening support and plantar fasciitis preventative. Continuous Stretch Of The Plantar Fascia Supports Arch And Overall Foot Structure Stabilizes Achilles Tendon And Ankle Improves Sense Of Balance Medical Grade Compression Targeted Conditions: Plantar Fasciitis Swollen Feet Arch/Heel Pain Care Instructions: Hand wash with mild soap and air dry. No bleach or fabric softener. Comes with two (2) compression foot sleeves per package.