Supports the MP joints while allowing fingers to move for functional use. Available in neoprene or Fabrifoam material with hook and loop closures. Neoprene provides warmth and stronger support. Fabrifoam provides thinner, comfortable support that won??t slip. Use for support and to maintain neutral alignment of the MP joints in rheumatoid arthritis. To size, measure width of MP joints. or contact your clinician for proper sizing!