The Adjustable Wrist and Thumb Spica Brace is constructed of a durable, lightweight material that provides both support and comfort. This brace comes with a removable aluminum palmar stay and provides the correct fit and proper support and an adjustable dorsal stay. The brace is Lycra-lined for breathability and comfort. Universal Sizing. Fitzroy is an exclusive brand backed by over 40 years of experience designing and manufacturing bracing solutions for retail and health professionals.