Mueller Arch Support Brace - OSFM Features: One Size Fits Most (OSFM) Provides upward compression to the arch Helps relieve pain associated with Plantar fasciitis Fits left or right Mueller Arch Support Brace - OSFM is the adjustable support helps provide relief from plantar fasciitis with targeted compression and a soft feel. It's lightweight and comfortable for all-day wear. Fits left or right foot and can be worn in a shoe. Easy to Apply: Position support under center of arch with blue pad facing up. Wrap strap on inside of foot over the top of foot Wrap strap from outside of strap over the top of foot and secure Adjust as needed.