For Persons 5' 4 And Up * Length 10.5 (22 Cm) * Fits Right Or Left Foot * The Aircast Airheel/dns Care Kit Gives You Round-the-clock Relief For Plantar Fasciitis * For Daytime The Unique Aircast Airheel Provides Clinically-proven Comfort And Massaging Relief For Plantar Fasciitis * Two Interconnected Aircells Located Under The Foot Arch And At The Back Of The Heel Apply Pulsating Compression With Every Step Help Reduce Swelling And Discomfort And Enhance Circulation * The Airheel Is Made Of Lightweight Breathable Fabric And Is Simple To Apply And To Adjust With One Strap * For Nighttime The Aircast Dorsal Night Splint Delivers Optimal Comfort For Pain Relief For Plantar Fasciitis * The Front-of-leg Hard Shell Has A Flexible Hinge And Is Paired With A Soft Adjustable Wrap-around Brace Making It Easy To Put On And Remove * Foot Angle Is Easy To Adjust Using The Front Strap