The NorthCoast MP Ulnar Drift Soft Fabrifoam Supports are comfortable non-slip wraps design to support the fingers will allowing them to move freely for daily tasks while maintaining neutral alignment of the MP joints. Users with Rheumatoid arthritis will find these comfortable adjustable wraps prevent ulnar drift of the MP joints. The NorthCoast MP Ulnar Drift Soft Fabrifoam Supports wrap around each MP joint to help provide proper alignment while allowing full flexion and extension. Each finger can be adjusted individually. These adjustable supports keep the MP joints of the hands in proper alignment to prevent ulnar drift. People with Rheumatoid arthritis often experience swelling of the MP joints which causes the fingers to shift toward the Ulna, resulting in Ulnar drift. Made of soft Fabrifoam material, the finger wraps are less bulky and non-slip for more comfortable support. To determine the correct size, measure width of MP joints. Small/Medium fits 2.5 to 3.5 inches, Medium/Large fits 3.5 to 4.5 inches. NorthCoast MP Ulnar Drift Soft Fabrifoam Supports provide comfortable support to help maintain neutral alignment of the MP joints, help users with Rheumatoid arthritis prevent ulnar drift. NorthCoast MP Ulnar Drift Soft Fabrifoam Supports Specifications: Material: Fabrifoam. Sizing: Measure width of MP joints. Choose size: Small/Medium or Medium/Large, for Left Hand or Right Hand. Small/Medium Fits: 2.5 to 3.5 inch MP Width. Medium/Large Fits: 3.5 to 4.5 inch MP Width.