The Thumb Spica Splint - F06 is a convenient device designed to keep the thumb in the functional abduction position. It supports the CMC joint and immobilizes the MCP joint of the thumb without inhibiting hand movement. This helps reduce pain and inflammation and prevents further thumb injury.Sizes Available:UniversalSalient Features:Smart and Sleek DesignBreathable MatrixRemovable Malleable SplintAllows Free Movement of the HandBreathable 3 Layered PUF Fused FabricDurableExcellent AestheticsBetter ComfortRemovable Malleable Splint - Provides Customized Abduction of the ThumbEnsures Excellent Immobilization and Stability to CMC & MCP JointsEthafoam Lining - Allows Full Hand and Finger MovementSleek and TrendyComfortable with Better ComplianceSize Options:Select one based on thumb circumference:SizeInchesCMUniversal/Circumference5-9.512.5-23.8