Wrist Lacer with Thumb Spica Wrist Brace. The Wrist Lacer is constructed of durable, perforated suede and moisture wicking polypropylene felt. Its single-pull lace closure and adjustable thumb strap enhance ease of application and patient fit. The Wrist Lacer has a removable, malleable palmar stay that supports the wrist. The Wrist Lacer with Thumb Spica is available in 8″ only.