S Neoprene Ankle Foot Support. Easy slip-on style. Ferula Limits medial lateral movement.Retain body heat and increases blood circulation while maintaining ankle flexibility. Provides adequate compression and reduces the possibility of further injury to the affected areas.Easy to wash, manufactured in therapeutic neoprene. Available in sizes: Small 5-7" (12.7-17.78cm), Medium 7.5-10" (19.05-25.4cm), Large 10.5-12" (26.67-30.48cm).